3 years ago

What can you calculate using the equation P equals W/t

Physics

1 answer:

Natalka [10]3 years ago

8 0

WE CALCULATE POWER AND RATE OF DOING WORK IS CALLED POWER

You might be interested in

A man of mass 80.0 kg stands on a platform of mass 40.0 kg. He pulls on a rope that is fastened to the platform and runs over a

Vesnalui [34]

Answer:F=648 N

Explanation:

Given

mass of man $m_1=80 kg$

mass of Platform $m_2=40 kg$

acceleration of system $a=1 m/s^2$

Let F be the force with which man pulls the rope which will also create a tension of F in rope

From Diagram

$2F-(m_1+m_2)g=(m_1+m_2)a$

$2F=(m_1+m_2)(g+a)$

$F=\frac{(m_1+m_2)(g+a)}{2}$

$F=\frac{(80+40)(9.8+1)}{2}$

$F=\frac{1296}{2}$

$F=648 N$

7 0

3 years ago

If a pendulum makes 10 oscillations in 5 seconds, what is its oscillation frequency?

dezoksy [38]

Answer:

$\boxed{ \rm{Frequency = 2 hertz}}$

Explanation:

We know that,

"Frequency refers to the number of occurrences of a periodic event per time and is measured in cycles/second."

According to Question,

⇒ 5 seconds = 10 oscillations

⇒ 1 second = 10/5 oscillations

⇒ 1 second = 2 oscillations

In one second, there are 2 oscillations or cycles. The unit of frequency is Hertz. Hence, the frequency is 2 Hertz.

4 0

3 years ago

A 7.80-g bullet moving at 540 m/s strikes the hand of a superhero, causing the hand to move 5.10 cm in the direction of the bull

Lina20 [59]

Answer:

$F = 22298.824\,N$

Explanation:

According to the Principle of Energy Conservation and the Work-Energy Theorem, the bullet has the following expression:

$U_{g,A} + K_{A} = U_{g,B} + K_{B} + W_{loss}$

$W_{loss} = U_{g,A}-U_{g,B} + K_{A}-K_{B}$

$F\cdot \Delta s = \frac{1}{2}\cdot m \cdot [v_{A}^{2}-v_{B}^{2}]$

The average force exerted on the bullet to stop it is:

$F = \frac{m\cdot [v_{A}^{2}-v_{B}^{2}]}{2\cdot \Delta s}$

$F = \frac{(7.8\times 10^{-3}\,kg)\cdot [(540\,\frac{m}{s} )^{2}-(0\,\frac{m}{s} )^{2}]}{2\cdot (0.051\,m)}$

$F = 22298.824\,N$

5 0

3 years ago

Read 2 more answers

Which is a property of every heterogeneous mixture?

Aneli [31]

D i am pretty sure :)

3 0

3 years ago

Read 2 more answers

What is heat?

GaryK [48]

I have a lesson in science I will get the picture for it

3 0

3 years ago

What can you calculate using the equation P equals W/t​

What can you calculate using the equation P equals W/t