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3 years ago

A point on the rim of .45 m radium rotating wheel has a tangential speed of 5.6 m/s. Calculate centripetal acceleration.

Physics

1 answer:

viva [34]3 years ago

3 0

Answer:

70 m/s²

Explanation:

hope this helps :)

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What is the net force on the loop from the wire if the loop carries a clockwise current i2 = 50 a?

natima [27]

WE are given
I2 = 50 A
The formula for the net force is
F = I2 L B
where I2 is the current
L is the length
and
B is the magnetic field
If we know L and B, we can substitute the values into the formula and solve fore the force

5 0

4 years ago

if you wanted to increase the energy of a wave but you had to leave the wavelength the same what might you do

Blizzard [7]

Answer:

Increase the amplitude

Explanation:

The energy conveyed by a wave is directly proportional to the square of its amplitude. Thus; E ∝ A²

This means that increasing the amplitude will lead to an increase in the energy.

Now, the amplitude of a wave is the height of a wave from it's highest point known as the peak, to the lowest point on the wave known as the trough whereas wavelength refers to the length of a wave from one peak to the next.

This means that increasing the amplitude has no effect on the wavelength.

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3 years ago

Checking Up 1. When a spring scale is used to do work pulling a cart to the top of an incline, where has the energy gone when th

Kobotan [32]

Answer:

1. When a spring scale is used to do work pulling a cart to the top of an incline, the elastic energy stored in the spring is converted into gravitational potential energy, since the top of an incline has a certain height.

2. The roller coaster get its gravitational potential energy from the kinetic energy it carries when it moves with a certain velocity.

3. Truckers use a ramp because it is easier to load a truck with less applied force. Although the work required is the same, without the ramp the force that they should apply is much greater, hence more difficult.

$W = F_1 \times h\\W = F_2 \times d \times \cos(\theta)$

h is greater than (d x cos(Θ)), hence F2 is smaller than F1.

7 0

4 years ago

If we monitor a point on a wire where there is a current for a certain time interval, which gives the charge that moves through

Temka [501]

Answer:

a. the product of the current and the time interval

Explanation:

the basic formula is: $Q = It$

current means the time rate of flow of charge: $I =\frac{Q}{t}$

where Q - charge

I - current

t - time

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3 years ago

What do lungs do in your body ?

kolbaska11 [484]

We have millions of alveoli under our lungs, they diffuse oxygen molecules in our blood, then they get transported to every organ of our body through our Heart

Hope this helps!

5 0

4 years ago

Read 2 more answers