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3 years ago

A small rock is thrown straight up with initial speed V0 from

Physics

1 answer:

bagirrra123 [75]3 years ago

8 0

Answer:

12 feet

Explanation:

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A body of mass 8 kg moves in a (counterclockwise) circular path of radius 10 meters, making one revolution every 10 seconds. You

Sav [38]

Answer:

Centripetal force is equal to 31.55 N

Explanation:

We have given mass of the body m = 8 kg

Radius of the circular path r = 10 m

It is given that it makes 1 revolution in 10 seconds

Distance traveled in 10 seconds is equal to $d=2\pi r=2\times 3.14\times 10=62.8m$

Velocity is equal to $velocity=\frac{distance}{time}=\frac{62.8}{10}=6.28m/sec$

We have to find the centripetal force

Centripetal force is equal to $F=\frac{mv^2}{r}=\frac{8\times 6.28^2}{10}=31.55N$

So centripetal force will be equal to 31.55 N

8 0

3 years ago

If you apply a net force of 5N on a cart with a mass of 5 kg, show that the acceleration is 1 m/s2.

Svetlanka [38]

Answer: F = 5kg x 1 m/s2 = 5 N

Explanation:

Hi, to answer this question we have to apply the next formula:

Force (F) = mass x acceleration

Replacing with the values given and solving for F (force)

F = 5kg x 1 m/s2 = 5 kgm/s2

Since 1 Newton (N) = 1 kgm/s2

F = 5N

Feel free to ask for more if needed or if you did not understand something.

3 0

4 years ago

According to the graph, what is the velocity, from B to C?

Lerok [7]

Answer:

can i see image please

Explanation:

8 0

3 years ago

What can make an inclined plane more efficient?

Sophie [7]

Answer:

Efficiency can be increase by using rollers in conjunction with the inclined plane. Wedge. The wedge is an adaptation of the inclined plane. It can be used to raise a heavy load over a short distance or to split a log

3 0

3 years ago

A simple generator has a square armature 5.0 cm on a side. The armature has 95 turns of 0.59-mm-diameter copper wire and rotates

guajiro [1.7K]

Answer:

$25.39Hz$

Explanation:

#First, we need to determine the actual emf required. The generator's internal resistance will cause a voltage drop inside the generator/

Internal resistance is defined using the formula:

$R=\rho L/A\\\rho=1.68\times10^-^8 \Omega m\\L=0.050m\times4\times 60=12.0m\\A=\pi r^2=\pi d^2/4=\pi(0.00059m)^2/4=2.734\times10^-^7m^2\\\\R=(1.68\times10^-^8 \Omega \ m\times 12.0m)/2.734\times10^-^7m^2\\=0.7374\ \Omega$