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3 years ago

Is the normal force equivalent to the weight of an object?

Physics

1 answer:

Greeley [361]3 years ago

4 0

Answer:

No.

Explanation:

If there are no applied forces, normal force is usually equivalent to the weight of the object but if there are outside force (force that makes the object to move) especially if it's inclined, then the inclined force would then affect the normal force.

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4. A microchip lets computers process information very quickly,

borishaifa [10]

Yes, that statement is true.

Microchips are specifically designed to make computers process information much faster, and make the devices a lot more portable.

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3 years ago

In 1949, an automobile manufacturing company introduced a sports car (the "Model A") which could accelerate from 0 to speed v in

Fudgin [204]

Answer: $\frac{P_B}{P_A}$ = 8.5264

Explanation: Power is the rate of energy transferred per unit of time: P = $\frac{E}{t}$

The energy from the engine is converted into kinetic energy, which is calculated as: $KE = \frac{1}{2}.m.v^{2}$

To compare the power of the two cars, first find the Kinetic Energy each one has:

K.E. for Model A

$KE_A = \frac{1}{2}.m.v^{2}$

K.E. for model B

$KE_B = \frac{1}{2}.m.(2.92v)^{2}$

$KE_B = \frac{1}{2}.m.8.5264v^{2}$

Now, determine Power for each model:

Power for model A

$P_{A}$ = $\frac{m.v^{2} }{2.t}$

Power for model B

$P_B = \frac{m.8.5264.v^{2} }{2.t}$

Comparing power of model B to power of model A:

$\frac{P_B}{P_A} = \frac{m.8.5264.v^{2} }{2.t}.\frac{2.t}{m.v^{2} }$

$\frac{P_B}{P_A} =$ 8.5264

Comparing power for each model, power for model B is 8.5264 better than model A.

7 0

3 years ago

What affect, if any, does increasing the speed of the plunger have on the wavelength of the waves

mojhsa [17]

As the speed of the plunger increases, the wavelength of the waves decreases. The greater the frequency, the smaller the wavelength. The smaller the frequency, the greater the wavelength. When we increase the speed of the plunger, the frequency of the waves also increases, and just like with the size of the ball, it’s the speed of the plunger and the frequency of the waves are directly related.

6 0

3 years ago

If you travel for three hours of a speed of 30 km/h, how far will you go?

lesya692 [45]

Answer:

90km

Explanation:

every hour you travel 30km and you are traveling 3 hours 30×3

4 0

4 years ago

calculate the pressure exerted on the floor when a elephant who weighs 6000N stands on 1 foot which has a area of 20m

Roman55 [17]

Answer:

1500n

Explanation:

5 0

3 years ago