PLEASE PLEASE HELP ME WITH THIS

Explanation:

K=mgh\\1300=(7)(9.8)h\\h=19\ mK=mgh

1300=(7)(9.8)h

h=19 m

Answer:

The magnetic influence on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. In a magnetic field, a moving charge experiences a force that is perpendicular to both its own velocity and the magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets, as well as ferromagnetic elements like iron. Furthermore, a varying magnetic field exerts a force on a variety of non-magnetic materials by changing the mobility of their outer atomic electrons.

Explanation:

:) hope this helps

Answer:

6.817 x 10^-4

Explanation:

You first need to put the decimal between the ones and tenths (6.8), then you count back to the original decimal point. If you are counting to the left then its going to be a negative exponent but if you count towards the right, it'll be a positive exponent. So from 6.817 to 0.0006817, it is 4 places back. Thats how you get the answer. Hope this helps a bit

Answer:

6.817 x 10^-4

Explanation:

First move the decimal between the ones and tenths (6.8), then count back to the original decimal point if you are counting to the left then its going to be a negative exponent but if you count towards the right it'll be a positive exponent. From 6.817 to 0.0006817, it is 4 places back, nd this is how you get the answer.

Answer:

Class 1 Levers: Moving the fulcrum closer to the load will increase the mechanical advantage. Moving the effort farther from the fulcrum will increase the mechanical advantage.

Explanation:

Hope it helps you

Answer:

38

Explanation:

76 divided by 2 =38

Answer:

D

Explanation:

the energy increased so the amplitude got taller and the wave length got shorter.

Inertia is the tendency of an object to stay in the current state. Hence, the stationary car has a tendency to continue in the state of rest. Quick starts up will make it move backward or if stop quickly while moving, it goes forward.

According to Newton's first law of motion, an objects tends to continue in its state of motion or rest until an external force acting on it. This tendency of the objects is called inertia.

The impacts of inertia can be well explained based on on real life examples. If we might had the experience of moving to front in a vehicle which suddenly breakes. It is the tendency of the vehicle to stay in motion.

Similarly the car when started from rest initially tends to stay at rest and that's why we feel it moves back ward. Similarly the car will move forward when it is suddenly stops.

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Answer:

When you add ice to hot water, the ice melts and the hot water cools

Explanation:

When ice is poured in a hot cup of water, the ice melts and then mixes with the hot water cooling and lowering the temperature. The weight increases when ice added. process occurring: ice melting to liquid.

Answer:

i think b sorry if im wrong!

Explanation:

Answer:7.625m/s2

Explanation: M=1525

N=200

F=M*a

200=1525*a

a=1525/200

a=7.625m/s2

Answer:

Approximately [tex]5.76 \times 10^{-18}\; {\rm J}[/tex] (by the external force that moved the electron.)

Explanation:

Let [tex]q[/tex] denote the magnitude of a charge in an electric field of magnitude [tex]E[/tex]. The magnitude of the electrostatic force on that charge would be:

[tex]F = q\, E[/tex].

In the electric field in this question, the magnitude of the electric force on the electron would be:

[tex]\begin{aligned}F &= q\, E \\ &= 1.6 \times 10^{-19}\; {\rm C} \times 600\; {\rm N \cdot C^{-1}} \\ &= 9.6 \times 10^{-17} \; {\rm N}\end{aligned}[/tex].

Moving the electron to the other plate would thus require an external force of [tex]9.6 \times 10^{-17}\; {\rm N}[/tex].

This force needs to be exerted over a distance of [tex]6.0\; {\rm cm}[/tex] ([tex]6.0 \times 10^{-2}\; {\rm m}[/tex].) The direction of the motion is the same direction as that of the external force. Thus, the work that needs to be done would be:

[tex]\begin{aligned}W &= F\, s \\ &\approx 9.6 \times 10^{-17}\; {\rm N} \times 6.0 \times 10^{-2}\; {\rm m} \\ &\approx 5.76 \times 10^{-18}\; {\rm J}\end{aligned}[/tex].

Answer:

Greenhouse gases include carbon dioxide, methane, nitrous oxide and other gases that accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life.

Answer:

study of everything that helps to improve the home and the family

Explanation:

Answer:

➢ Home economics, or family and consumer sciences, is a subject concerning human development, personal and family finance, housing and interior design, food science and preparation, nutrition and wellness, textiles and apparel, and consumer issues.

Explanation:

I hope it will help you....

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Answer:

[tex]\huge\boxed{\sf Circumstellar\ discs }[/tex]

Explanation:

Astronomers discovered matter made up of gas, dust or asteroids etc. around nearby stars. This matter is called circumstellar disc (due to it being ring-shaped). These circumstellar discs are materials out of which planets form.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Given what we know, despite not having the figure attached to the question, we can still confirm that the magnitude for the acceleration of the dancer will be zero.

This has to do with how the question clarifies the speed of the dancer. Though it does not give us an exact value, we are told that the speed is constant. This is an indicator that the acceleration is zero because with any other value for acceleration the speed cannot remain constant.

Therefore, given that any value for acceleration will increase or decrease the speed of the dancer, but we are told that the dancer's speed is constant throughout the trip, we can confirm that the magnitude for the acceleration of the dancer is zero.

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Answer:

Momentum = m x v

225 = 45 x v

÷45

5 = v

Velocity is 5m/s

Answer is A

Hope this helps!

Jupiter would exert the most gravity on a spacecraft that is passing close to Jupiter. Hence option D is correct.

The biggest planet in the Solar System, Jupiter, is the fifth planet from the Sun. It is a gas giant with a mass that is slightly less than one thousandth that of the Sun and more than two and a half times that of all the other planets in the Solar System put together. After the Moon and Venus, Jupiter is the third brightest natural object in the Earth's night sky, and people have been seeing it since ancient times. Jupiter, the main deity of ancient Roman religion, inspired its name.

Helium makes up a quarter of Jupiter's mass and a tenth of its volume, whereas hydrogen makes up 90% of the planet's volume. Jupiter's interior is constantly contracting, which produces more heat

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Answer: READ WHOLE THING ***

A ramp is an example of an inclined plane. Think back to the example of the ramp and the moving truck. The ramp reduced the amount of force needed to lift the box by moving it over a greater distance. The longer an inclined plane, the less force is required to move an object upward.

Hope this helps :)

True, a lower ramp will be longer, allowing for less force to be used, but makes an object travel a greater distance.

Therefore , a lower ramp will be longer, allowing for less force to be used, but makes an object travel a greater distance.

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The force of the car's engine exerts is 6000 N.

To find the force, the given values are,

acceleration, a = 3 m/s².

mass = 3000 kg

Acceleration, a = Force F/ Mass m

From which we get the formula

Force F = Mass m × Acceleration a

Where, mass is kg and acceleration is m/s².

where kg is kilogram-meter per second square or Newton.

Substituting the Equation in:

F = ma

  = 3000kg x 2m/s²

  = 6000kgm/s²

F = 6000 N.

So, the Force of the car engine exerted is 6000 N.

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Hi there!

Recall the equation for momentum:
[tex]\large\boxed{p = mv}[/tex]

p = linear momentum (kgm/s)
m = mass (kg)

v = velocity (m/s)

We can calculate each object's momentum and compare.

Cement truck:
[tex]p = 20000 \cdot 5 = 100000kg\frac{m}{s}[/tex]

Race car:
[tex]p = 1000 \cdot 90 = 90000 kg\frac{m}{s}}[/tex]

Since 100,000 > 90,000, the cement truck has the greater momentum.

Answer:

mind-bogglingly hot

Explanation:

If a sunspot were pointed right at Mercury in this way, the planet would become even more mind-bogglingly hot. Sunspots look dark in our visual spectrum, so we might suspect that they are colder (or at least less hot) than the rest of the Sun; but in fact, they are hotter.

Answer:110N

Explanation:

ma=f in/ f out (formula)

Input: 20.0N

Ma:5.5

Output:?

^ given information

Plug the numbers into the equation ~
5.5= 20N/?
5.5x20=110N

If a certain lever has a mechanical advantage of 5.5, then the leaver would be able to lift a load of 110 Newtons  with an input force of 20.0 N

Mechanical advantage is defined as a measure of the ratio of output force to input force in a system, It is used to analyze the forces in simple machines like levers and pulleys.

Mechanical advantage = output force(load) /input force (effort)

As given in the problem a certain lever has a mechanical advantage of 5.5, then we have to find out how heavy of a load could the lever lift with an input force of 20.0 N,

Mechanical advantage = output force(load) /input force (effort)

5.5 = load / 20.0 Newtons

load = 5.5 × 20

       = 110 Newtons

Thus, the leaver would be able to lift a load of 110 Newtons  with an input force of 20.0 N

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Answer:

-(F1+F2)y

Explanation:

add up F1 and F2 using x-y components

Since the three forces balance,

F3y = -(F1+F2)y

Answer: 10.29

Explanation:

F1: 6.25cos(180°) = -6.25

F2: 8.90cos(243°) = -4.04

F3: -6.25 + (-4.04) = 10.29