Force vectors can be added together in any order. It does not matter which vector you draw first, the resultant will be the same, both in length and direction. Practice finding resultant vectors by completing this assignment.

You will need a ruler and a protractor. Calculate the resultant force vector for each of the following sets of two force vectors. You will need the protractor to make sure you are redrawing each force vector in the right direction using the correct angles. The ruler is used to redraw the force vectors with the correct magnitude. After you sketch the resultant, measure the length and the direction of it. Provide the magnitude and direction, including the units, for your answers. The horizontal dotted lines are there simply to help you measure the angles with the protractor. Graph paper would help with this assignment.

Answer:

water

Explanation:

The engineer should take into account the convective currents that cause higher temperature gases to rise and lower temperature gases to sink.

Convection is a term that refers to the way in which heat is transmitted in a liquid or gaseous state as a consequence of the actual movement of particles at different temperatures. If this movement is due to the effect of gravitation, due to differences in density, it is called natural convection.

The engineer must take into account that, due to their density, the hottest gases tend to rise, and the coldest gases descend. Therefore, he would have to find a way for the hot gases to leave the floor and circulate around the house so that it stays at a warm temperature.

In the case of a house that is in a warmer climate the engineer should take into account convection because it can find a way in which the hot gases rise and are released through the roof of the house and keep the gases cold inside the house.

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The magnitude of the relative angle φ with which the ski jumper hits the slope

φ=14.08

This is further explained below.

Generally, the equation for time is mathematically given as

[tex]t = \frac{(2V tan \theta)}{g} \\\\t = \frac{2 * 24 * tan 59}{9.8}[/tex]

t = 8.152 s

The formula will now provide the slope of the flight path at the time of impact;

tan = V y / V x

V_y = 9.8 * (8.152)

V_y= 78.89 m/s

In conclusion,

[tex]tan \alpha = \frac{78.89}{24}[/tex]

[tex]tan \alpha = 3.2871[/tex]

[tex]\alpha= 73.08°[/tex]

Hence

φ=[tex]\alpha - \theta[/tex]

=73.08-59

φ=14.08

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The complete question is;

A ski jumper travels down a slope and leaves the ski track moving in the horizontal direction with a speed of 24 m/s. The landing incline below her falls off with a slope of θ = 59◦ . The acceleration of gravity is 9.8 m/s².

What is the magnitude of the relative angle φ with which the ski jumper hits the slope? Answer in units of ◦

An experiment to investigate the relationship between the applied force and the displacement of the spring, requires a spiral spring, two different masses and a meter ruler to measure the original length and displacement of the spring.

This experiment seeks to demonstrate Hooke's law, which states that  the applied force F is equal to a constant k, to a displacement or change in length x. Mathematically, F = kx.

To demonstrate this law, we need;

The set up appears as shown in the image attached. The natural length of the spring is first measured and recorded. The masses are now added gradually and the displacement of the spring is recorded each time.

A straight line graph is obtained when the force is plotted against the displacement within the elastic limit of the spring.

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The magnitude of the friction force she experiences=> f=  183.26 N.

friction force isthe force which opposes the motion of an object.

Total mass= 50 + 35 kg=85 kg

g= 9.8 m/s²

coefficient of friction with the snow (ц)=0.220

the friction force acting here is kinetic friction force, which is product of coefficient of friction and force acting on it which is mass × acceleration due to gravity.

the magnitude of the friction force= kinetic friction acting here=ц m g

                                   f = 0.220 × 85 kg × 9.8

                                   f=  183.26 N

friction force acting here is =  183.26 N.

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A force is an influence that has the power to alter an object's motion. A massed object's velocity can be changed or accelerated by a force. A force is a vector quantity since it has both magnitude and direction.

The mass of a physical body is a measure of its entire makeup. It also measures inertia, or the body's resistance to acceleration when a net force is applied. The strength of a body's gravitational pull on other bodies is also influenced by its mass. Kg is used as the fundamental mass unit.

Acceleration is the rate at which the velocity of an object modifies with respect to time. The direction of the net force acting on an object determines its acceleration.

As we know,

Force = mass x acceleration

Therefore, acceleration = force / mass

                                       = {(35 / 30) - (35 / 20)} kgN

                                       = 0.583 kgN towards right

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With the use of the formula below, their initial angle of launch was 26.2°

A projectile is any object that is projected into the air which take a trajectory path.

Given that a catapult shoots an object 1.65m at an initial velocity 15m/s. It is in the air for 0.33s. Their initial angle of launch can be calculated by using the formula

h = usinФt - 1/2gt²

Where

Substitute all the parameters into the formula

1.65 = 15sinФ × 0.33 - 1/2 × 9.8 × 0.33²

1.65 = 4.95sinФ - 0.5336

Collect the like term

4.95SinФ = 1.65 + 0.5336

4.95SinФ = 2.184

SinФ = 2.184/4.95

SinФ = 0.4411

Ф = [tex]Sin^{-1}[/tex](0.4411)

Ф = 26.2°

Therefore, their initial angle of launch was 26.2°

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There are three positive things about meditation:

Meditation helps you manage anxiety, stress, and depression.

There are three reasons you should not eat junk food:

Meditation can increase alertness and focus but extremes can lead to insomnia and other sleep disorders. I also found it high Meditation is the habitual process of training the mind to focus and redirect one's thoughts. Meditation is growing in popularity as more people discover its many health benefits. You can use it to increase awareness of yourself and those around you.

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The force that the particle A exerts on the particle B, which is still to the right of it, points to the left.

A measurement with both magnitude and direction. It is often represented by an arrows whose length is proportional to the size of a quantity and whose orientation is the same as that of the quantity. An vector does not even have position, while having direction and magnitude.

Lets look at the ratio of the forces of the same charges but at different distances

[tex]$\frac{F_1}{F_2}=\frac{k_e \frac{q_{A q_B}}{r_1^2}}{k_e \frac{q_A q_B^2}{r_2^2}}$[/tex]

[tex]$\frac{F_1}{F_2}=\frac{r_2^2}{r_1^2}$[/tex]

Pugging in our given values we get the force F2 as:

[tex]$F_2=\frac{r_1^2}{r_2^2} F_1$[/tex]

=(13.7mm)2/(17.7mm)2(2.62N)

=1.57 N

The force that the particle A exerts on the particle B, which is still to the right of it, points to the left.

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The maximum resultant of two vectors , one 10m/s and 20 m/s will be 22.36.

The movement of an object that has been launched into the air is known as projectile motion. Only gravity is felt by the item after the initial force that launches it. Projectile and trajectory both refer to the same thing: an object. Air resistance is the name for the frictional force that an object experiences as it moves through the air and slows it down. Air resistance does greatly change trajectory motion, but because it is difficult to calculate, it is not taken into account in basic physics.

The separation of horizontal and vertical motions is the most crucial idea in projectile motion.

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Answer:

Option - d This is trick question, since the solar constant never change. The gravity of the Sun keeps the planets in their orbits at all times. They stay in their orbits, since there is no other force in the Solar System which can stop them. Yeah this might help. Add to brainliest please

Answer:

B

Explanation:

The induced emf in a single loop of wire -1.48 V.

Induced EMF is the exchange in capability difference due to a change within the magnetic flux of a coil, while modern-day is the drift of electrons thru a conductor in a closed circuit.

ε = | N ΔФ/ Δt | = N |Ф₂ - Ф₁ / Δt |

ε = induced emf

N = number of loop, given, 1

Ф₂ = final magnetic flux, given, 0.110 Tm²

Ф₁ = initial magnetic flux , given, 0.850 Tm²

Δt = change in time , given, 0.5s

Put these values in formula, ε = | N ΔФ/ Δt | = N |Ф₂ - Ф₁ / Δt |

ε = - 0.740/0.5

ε = -1.48 V

Hence, the induced emf in a single loop of wire -1.48 V.

An emf is induced inside the coil whilst a bar magnet is pushed inside and out of it. Emfs of opposite symptoms are produced through movement in opposite instructions, and the emfs are also reversed by using reversing poles. The same outcomes are produced if the coil is moved instead of the magnet it's miles the relative movement this is crucial.

An emf is produced whenever the magnetic flux is modified in a closed circuit. This emf is referred to as the brought about emf, and the cutting-edge that flows inside the closed circuit is called the induced current.

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In order to find the time it takes, first let's convert the distance from miles per hour to feet per second: calculate the acceleration using Torricelli's equation

Then, let's :

Now, we calculate the time with the formula below:

Therefore the time required is 1.7 seconds.

In the situation shown, if the cannon fires a banana aimed underneath the monkey at the same time that the monkey falls from the tree, the banana will fly below the monkey and miss.

In the presence of gravity, the banana will move in a parabolic path. As the monkey lets go of the tree, it will have a downwards acceleration due to the presence of gravity. But both the banana and the monkey will have the same amount of acceleration. Because gravity causes objects to accelerate at the same rate independent of their mass.

Since both the banana and the monkey experienced the same acceleration, both will fall equal amounts of distance below their gravity-free path. So the banana misses the monkey, moving below the monkey. The only way the banana hits the monkey is that if the cannon is aimed at the monkey.

Therefore, if the cannon fires a banana aimed underneath the monkey at the same time that the monkey falls from the tree, the banana will fly below the monkey and miss.

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From the conservation of linear momentum, the common speed in which the two will move together immediately after colliding is 1.33 m/s

Conservation of Linear Momentum state that the sum of the momentum before collision is the same as the sum of the momentum after collision.

Given that a 2 kg blob of putty moving at 4 m/s slams into a 6 kg blob of putty at rest.

The common speed V of the two stuck together blobs immediately after colliding can be calculated by using the formula

M1U1 + M2U2 = (M1 + M2)V

(2 × 4) + 0 = (2 + 4) V

8 = 6V

V = 8/6

V = 1.33 m/s

Therefore, the common speed of the two stuck together blobs immediately after colliding is 1.33 m/s

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The total distance that the sled moved is 332.01 m.

Total distance s = s1 + s2 + s3

1st Case: Acceleration

u = 0 m/s

v = 37 m/s

a = 25 m/s²

Therefore, using the equation of motion:

[tex]v^{2} - u^{2} = 2as\\s = v^{2} - u^{2}/2a\\s = 37^{2} - 0^{2}/2 * 25\\s = 27.38m[/tex]

2nd Case: No Acceleration

t = 7 s

v = 37 m/s

[tex]s_{2} = v * t\\ s_{2}= 37 * 7 = 259m[/tex]

3rd Case: Deceleration

a = -15 m/s²

u = 37 m/s

v = 0 m/s

Therefore, using the equation of motion

[tex]v^{2} - u_{2} = 2as\\[/tex]

[tex]s = 0^{2} - 37^{2}/2 * -15 = 45.63m[/tex]

Therefore,

S = 27.38 + 259 + 45.63 m = 332.01 m

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(a) The electromotive force induced in the loop is 0.017 V.
(b) The ratio of induced electromotive force  to loop resistance yields the current in the circuit.

How can we calculate emf induced in a loop?
The emf induced in the loop can be calculated using Faraday's law:
emf = dФ/dt ⇒ emf = A * (dB/dt)
where A represents the area of the loop and dB/dt is the change in magnetic field with time.

Therefore, using the above relation, emf induced= 0.0901 * 0.197= 0.017V
Again, using Ohm's law the current in the loop can be determined since
Current = emf/Resistance.

Thus,
(a) The electromotive force induced in the loop is 0.017 V.
(b) The ratio of induced electromotive force  to loop resistance yields the current in the circuit.

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Answer: 0.6 g /cm^3

Explanation:

Just plug in the value in the equation d=m/v and you will get the answer!

The acceleration of the skateboarder is calculated out to bbe -2.33 m/s^2, when travelled at 7 meters per second.

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The correct statement from above about the conservation of mass is: mass is conserved in both physical and chemical changes.

The correct answer choice is option c.

It follows that the law of conservation of mass states that: " matter can neither be created nor destroyed but changes from one form to another ". From this statement of the atomic theory, it then means that the mass of any substance remains the same in any state of matter, physical changes, chemical changes, before reaction and after reaction. Mass is neither created not destroyed.

The mass of matter is the same through out in both physical and chemical changes.

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Answer:

B) Measuring cylinder

Explanation:

Answer:

1.125 m/s^2

Explanation:

Given:

To Find:

Formula used:

where,

v = final velocity

u = initial velocity

a = acceleration

S = Displacement

Let the acceleration be a.

Using the above formula, we have

60^2 = 0^2 + 2(a)(1600)

3600 = 3200a

a = 36/32

a = 9/8

a = 1.125 m/s^2

So, the acceleration is 1.125 m/s^2.

Answer:

26 mi/hr

Explanation:

65 miles  /  2.5 hours = 26 mi/hr

Answer:

......................

The first stage in the evolution of stars is the protostellar phase. It lasts roughly 500,000 years for a low-mass star (sun-mass or less).

When a star is still gaining mass from its parent molecular cloud, it is referred to as a protostar. The first stage in the evolution of stars is the protostellar phase. It lasts roughly 500,000 years for a low-mass star (sun-mass or less). A molecular cloud fragment first experiences self-gravity-induced collapse before entering the phase, where an opaque, pressure-supported core develops inside the fragment. It comes to an end when the gas that is descending outruns it, leaving a pre-main-sequence star that subsequently contracts to become a main-sequence star at the start of hydrogen fusion that produces helium. Since the protostar is still contracting, its diameter and surface area are extremely large, and its luminosity may be approximately 100 times greater than when it is fully formed.

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The horizontal displacement of the stunt diver from the base of the cliff is 33.9 m

The time of motion of an object is the time taken for the object to travel from its initial position to the final position.

The time taken for the stunt diver to travel down the given height is calculated as follows;

h = vt + ¹/₂gt²

where;

h = ¹/₂gt²

2h = gt²

t² = 2h/g

t = √(2h/g)

t = √(2 x 13 / 9.8)

t = 1.63 seconds

The horizontal distance travelled by the stunt diver is calculated as follows;

X = Vₓt

where;

X = 20 .8 m/s  x  1.63 s

X = 33.9 m

Thus, the displacement of the stunt diver from the base of the cliff is 33.9 m.

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Answer: Pitch of the sound depends on the frequency of the sound wave. The pitch is affected by the source of production of sound wave. It also depends on the shape of the medium in which it travels.

Explanation:

An ohmic conductor's resistance is independent of the applied voltage, so the temperature stays constant.

An ohmic material or component is any material, component, or device that complies with Ohm's law, according to which the current flowing through the object is proportional to the applied voltage. Nonohmic materials and components are any substances or parts that do not adhere to Ohm's law.

Ohm's law, which describes how current, voltage, and resistance are related. The voltage or potential difference across a large number of materials directly correlates to the amount of steady current through those materials.

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