A 0.5kg object is in free fall as it falls downward near the surface of a planet. A graph of the object’s velocity as a function of time is shown. What is the force due to gravity exerted on the object by the planet?

For a 2.0 kg block is pushed 2.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0, the work done is 8.3 J

This refers to the term that shows the product of the displacement of an applied force in a given direction.

Hence, the calculations are:

The work done by a force pushing an object is given by:

W= Fdcos[tex]\alpha[/tex]

where

d= 1m

[tex]\alpha[/tex] = 63 degrees

W= (18.3)(1)(cos 63 degrees)

=8.3J

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A 2.0 kg block is pushed 1.0 m at a constant

velocity up a vertical wall by a constant force

applied at an angle of 27.0

◦ with the horizontal, as shown in the figure.

The acceleration of gravity is 9.81 m/s

2.

If the coefficient of kinetic friction between

the block and the wall is 0.40, find

a) the work done by the force on the block.

The intensity of the sound at a disatance of 3.0 m and 9.0 m from the 350 watt speaker is 3.09 db and 0.34 db respectively.

Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area.

To calculate the intensity of sound, we use the formula below.

Formula:

Where:

Given

At a distance of 3m,

At a distance of 9.0 m,

Hence, the intensity of the sound at a distance of 3.0 m and 9.0 m is 3.09 db and 0.34 db respectively.

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The following choice is an example of gathering evidence in Taking measurements. Option B.

The scientific method is the process of objectively establishing facts through testing and experimentation. The basic process is to make observations, form hypotheses make predictions conduct experiments and finally analyze the results. Accurate readings are evidence-based.

Without evidence the author just states his opinion. So writing an essay begins with gathering evidence long before writing it. The advantage of naturalistic observation is that the researcher can directly observe the subject in its natural environment. This method gives scientists direct insight into social behavior and helps them realize things they might not have encountered in a laboratory setting.

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A. The distance from the edge that the car will lad is 48.75 m.

B. The velocity it hit the ground with, v is 19.1 m/s in the forward direction.

The distance from the edge will the car traveling at a velocity of 25 m/s is calculated as follows:

Time taken = √(2h/g)

where h is the height = 18.6 m

g is the acceleration due to gravity = 9.8 m/s²

t = √(2 * 18.6/9.8)

t = 1.95 seconds

Distance = 25 * 1.95

Distance = 48.75 m

The velocity it hit the ground with, v is calculated as follows:

v²= u² + 2gh

where;

u is initial vertical velocity = 0

g = 9.8 m/s²

h = 18.6 m

v = √2gh

v = √(2 * 9.8 * 18.6)

v = 19.1 m/s in the forward direction.

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The temperature in the pool to avoid condensation in an indoor swimming pool is cooler than air temperature.

Temperature :

Humidity:

The amount of water vapour in the air is known as humidity.

The humidity will be high if there is a lot of water vapour in the atmosphere. It feels wetter outside as the humidity

In indoor pools, the relative humidity should be kept between 50 and 55 percent at a temperature of around 26 degrees in the winter and 23 degrees in the summer.

The temperature in the pool to avoid condensation in an indoor swimming pool is cooler than air temperature.

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Since the collision is inelastic, both vehicle will move with a common velocity of 2.5 m/s in south east direction after collision.

It states that, the sum of the momentum before collision is equal to the sum of the momentum after collision.

Given that a 7500 kg truck traveling at 5.0 m/s east collides with a 1500 kg car moving at 20 m/s in a direction 30° south of west. After collision, the two vehicles remain tangled together.

The given parameters are;

The formula to find the speed will be

M1U1 - M2U2 = (M1 + M2)V

7500 × 5 - 1500 × 10 = (7500 + 1500)V

37500 - 15000 = 9000V

22500 = 9000V

V = 22500/9000

V = 2.5 m/s

Therefore, the common speed will be 2.5 m/s and the direction of the car will be toward the south east.

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A person who is high in comfort with closeness and high in anxiety over abandonment in Bartholomew's attachment model is known as a generalized anxiety disorder

An individual is said to be suffering from a generalized anxiety disorder when he or she worries too much, gets worried constantly or excessively and subjects the person to being abandoned to his problem or situation. It is on this premise that such individuals are usually in Bartholomew's attachment model.

So therefore, we can now confirm and deduce from the simple note given above that a generalized anxiety disorder have great negative impact on our wellness.

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430.9 N is the horizontal force exerted by the ladder on the wall

Torque=FLsinθ

m=10.8kg

L=10.5m

g=9.8 ms²

θ=72

Torque=FLsinθ

Torque=1111.32×sin 72

Torque=430.9 N

In mechanics, a force is any action that seeks to preserve, modify, or deform a body's motion. Isaac Newton's three principles of motion, which are outlined in his Principia Mathematica, are frequently used to illustrate the idea of force (1687).

Newton's first law states that unless a force is applied to a body, it will stay in either its resting or uniformly moving condition along a straight path. According to the second law, when an external force applies on a body, the body accelerates (changes velocity) in the force's direction.

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Explanation:

Let

T

be the tension of the cable and m

g

be the force of gravity. If the upward direction is positive, then Newton’s second law is T−mg=ma, where a is the acceleration. Thus, the tension is T=m(g+a). We use constant acceleration kinematics (Table 2-1) to find the acceleration (where v=0 is the final velocity, v

0

=−12m/s is the initial velocity, and y=−42m is the coordinate at the stopping point). Consequently, v

2

=v

0

2

+2ay leads to

a=−

2y

v

0

2

=−

2(−42m)

−12m/s

=1.71m/s

2

We now return to calculate the tension:

T=m(g+a)

=(1600kg)(9.8m/s

2

+171m/s

2

)

=1.8×10

4

N

The direction of the electric field at a given point is determined by the relative magnitudes and positions of the charges involved. The electric field lines always point away from positive charges and towards negative charges. The strength of the electric field is greater when the charges are closer together.

At point P, the direction of the electric field created by a positive charge Q and a particle with a negative charge -Q will depend on the relative positions of the charges. Let's consider two scenarios:

1. If the positive charge Q is closer to point P than the negative charge -Q:

In this case, the positive charge Q will exert a stronger electric field compared to the negative charge -Q at point P. The electric field vectors will point away from the positive charge Q and towards the negative charge -Q. Therefore, the overall direction of the electric field at point P will be towards the negative charge -Q.

2. If the negative charge -Q is closer to point P than the positive charge Q:

In this scenario, the negative charge -Q will exert a stronger electric field compared to the positive charge Q at point P. The electric field vectors will point away from the negative charge -Q and towards the positive charge Q. Consequently, the overall direction of the electric field at point P will be towards the positive charge Q.

It's important to note that the direction of the electric field is independent of the charge of the test particle at point P. The electric field exists irrespective of the presence of a test charge, and its direction is determined solely by the configuration and positions of the charges creating the field.

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Battery-powered clocks and Washing machines are objects that transform chemical energy into mechanical energy.

Chemical energy is a type of energy that is stored in the bonds of a chemical. It is converted into thermal energy when people burn wood or burn gasoline in the engine of a car. Mechanical energy is a type of energy that is stored in objects by tension. Compressed springs and stretched bands are examples of mechanical energy.

Mechanical energy i.e. kinetic energy or potential energy is the energy that is present in an object in motion or the energy that is stored in objects due to their position. Mechanical energy is a type of renewable energy.

So we can conclude that options A and C are the correct answers.

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The weight of the container on Mars is 296 N.

The weight of the container on Uranus  is 696 N.

The mass of the container on both Mars and Uranus is constant.

The weight of an object is the measure of effect of gravitational force on an object.

The weight of an object changes with change in acceleration due to gravity.

Mathematically, weight of an object is given as;

W = mg

where;

The mass of an object is defined as the quantity of stuff contained in an object.

The mass of an object does not change with gravity.

The weight of the container on Mars is calculated as follows;

W = mg

where;

W = 80 x 3.7

W = 296 N

The weight of the container on Uranus  is calculated as follows;

W = mg

where;

W = 80 x 8.7

W = 696 N

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Answer:

he weight of the container on Mars is 296 N.

The weight of the container on Uranus  is 696 N.

The mass of the container on both Mars and Uranus is constant.

Explanation:

The foundation of biology is modern cell theory, which is a commonly recognized explanation of the relationship between cells and living things.

Because it has been independently verified by numerous scientists working together, scientific knowledge is regarded as lasting. Independent researchers utilize the scientific method to generate factual data and knowledge that adds to the body of knowledge in their subject.

A generalized collection of laws and hypotheses developed using the scientific method and intended to explain a phenomenon or behavior of interest is referred to as scientific knowledge. Theories are methodical explanations of the underlying phenomenon or behavior, whereas laws are recognized patterns of occurrences or behaviors.

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The rate of acceleration of the hockey puck with a mass of 170 g is 0.88 m/s².

Acceleration can be defined as the rate of change of velocity.

To calculate the acceleration of the puck, use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, puck's rate of acceleration is 0.88 m/s².

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A wind turbine transfers kinetic energy to mechanical energy from energy stores, which is then used to generate electricity.

Wind energy is a type of renewable source of energy that can be used for converting it into electrical energy by the use of turbines that transform mechanical energy into electricity, which is then used for different purposes (both industrial and  particular home usage).

Therefore, with this data, we can see that wind energy can be used to generate electricity by means of turbines that convert mechanical energy into electricity.

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The way that the clock at the rim of the space station compare with one residing at the hub is that Rim clock will always runs slower.

The behavior of a clock sitting on the surface of a planet with a surface gravity of one g is the same.

For instance, timekeeping on the International Space Station (ISS) is slightly slower than that of reference clocks on Earth. This explains why astronauts on the International Space Station (ISS) mature more slowly, lagging by 0.007 seconds every six months.

Ground-based atomic clocks have served as the industry standard for timekeeping since the 1950s. These clocks use the extremely steady and accurate frequencies of light emitted by particular atoms to keep time.

Therefore, Satellite clocks run slower due to more velocity but faster due to reduced gravity. Clocks move more slowly at the ISS orbital height because velocity dominates. At GPS altitude, clocks move more quickly due to the influence of gravity.

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The work done by the cat is 500J and the force with which the frog hit the lily pad is 5N.

The definition of work includes both the force that is applied to the body and the displacement of the body.

Think about a block that is resting on a horizontal, frictionless floor. A constant force F acts on this block. The result of this force is to move the body d meters in a straight line in the force's direction.

Work done = Force * displacement

Work done = 50N * 10m

Work done = 500Nm

Thus, the work done by the cat is 500J.

Force = Work done / displacement

Force = 10J /  2m

Force = 5N

Thus, the force with which the frog hit the lily pad is 5N.

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With increasingly long delays due mostly due to the increasing gravitationally time dilation affecting the probe when a trajectory that will take it into the black hole.

A black hole is a celestial object with a gravitational pull so powerful that nothing, not even light, can escape. A black hole can develop as a result of the death of a massive star. When its internal thermonuclear fuels run out at the end of its life, the center of such a star gravitationally collapses inward into itself, obliterating the star's outer layers.

The crushing weight of component matter crashing in from all directions causes the dying star to be crushed to a point with zero volume and infinite density known as the singularity. Black holes are often hard to observe directly due to their small size and the lack of any visible light from them.

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14 mΩ should the internal resistance be for the maximum current in

the above situation to be 1.00 mA or less .

What is internal resistance ?

Internal resistance refers to the resistance to current flow provided by the cells and the battery itself, resulting in heat generation. Internal resistance is measured in ohms. The relationship between the internal resistance (r) and electromotive force (e) of cell s is given by

e = I (r + R)

where e = EMF, or H. electromotive force (volts), I = current (A), R = load resistance, r is the internal resistance of the cell, measured in ohms.

Rearranging the above formula, we get: e = IR + Ir or e = V + Ir

In the above equation, V is the potential difference (clamp) across the cell when current (I) is flowing through the circuit.

r = E-Ir/I

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e option is the correct answer - 2890m

Initial velocity(u) = 0[tex]m/s[/tex]

Accelaration(a) = 3.20[tex]m/s^{2}[/tex]

time(t) = 42.5s

The equation S = u t + 1 2 a t 2 is newton's second equation of motion. Here, 'S' represents the displacement of a body, 'u' represents the initial velocity of a body, 't' represents the time taken by the body to cover the displacement in t time(seconds), and 'a' represents the constant acceleration of a body throughout the movement.

[tex]s = ut + 1/2at^{2}[/tex]

[tex]s = 0(t) + 1/2(3.20)(42.5^{2}) \\s = 1/2(5780)\\s = 2890m[/tex]

The value of s is 2890m.

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Answer:

C: 5

Explanation:

MA = radius of wheel/ radius of axle

MA =2.5/0.5

MA = 5.0

The amount of electric power supplied by the water that flows over a waterfall 16 m high at the rate of 3.00×10⁴ kg/s is 1646400 W.

Electric power is the rate at which electric energy is consumed in an electric circuit or system.

To calculate the electric power supplied by the water, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the amount of electric power supplied is 1646400 W.

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Answer:

v = 28 m/s

Explanation:

Since energy is conserved:

Eg = Ek

mgh = 1/2mv^2

masses cancel

gh = 1/2v^2

(9.8)(40) = 1/2v^2

(2)(40)(9.8) = v^2

v = sqrt(784)

v = 28 m/s

Answer:

1205.4N

Explanation:

given. "if the tension of the cable is 1205.4N)

Answer:

A =Magnetic fields

Explanation:

Answer:

Air resistance

PLEASE GIVE BRAINLIEST THANK YOU!!!

Particles with the like charges attract while opposites repel therefore the third charge has to be placed on the right side of -q charge for the electric force to be zero at a distance of 6.8 from the origin.

Electric force is measured = (kq₁q₂)/r²

Where k is a constant,

q₁ is charge of the particle at the origin, +2,

q₂ is the charge of the particle on the x-axis, -q

r is the distance from origin

2a is the distance from -q

e is electric force, 0

Let distance of particle from -q be x and +2q be y

y - x = 2a

x = y - 2a

kqe/x² = k2qe/(x + 2a)²

((x + 2a)/x)²  = 2

(1 + 2a)/x = √2 cross multiply

x = 2a/(√2 - 1) = 4.8284a

x = 4.8284a

y = x + 2a

y = 4.8284a + 2a

y = 6.8284a approximately 6.8a

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(a) The change in monetum of the car of mass 1000 kg is 14000 kgm/s .(b) The average force on  the car as it accelerates is 933.3 N.

This can be defined as the product of the mass of a body and its change in velocity.

To calculate the change in momentum, we use the formula below.

Formula:

Where:

From the question,

Given

Substitute these values into equation 1

Also, to calculate the average force of the car, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute into equation 2

Hence, (a) The change in monetum of the car is 14000 kgm/s (b) The average force of the car is 933.3 N.

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Answer:

3.91 s

Explanation:

d = -75

a = -9.81

d = 1/2 at^2

-75 = 1/2 ( -9.81) (t^2)

75 = 1/2 ( 9.81) t^2            shows t = 3.91 s