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3 years ago

If you were trying to describe the difference between power and work you could say...?

Physics

1 answer:

Paha777 [63]3 years ago

6 0

Answer:

Look to the explanation

Explanation:

Work done is is the energy transferred to or from an object by means

of a force acting on the object.

Work is positive if energy transferred to the object, and work is

negative if energy transferred from the object.

Work = Force in the direction motion of object × its displacement

$W=F*s$

The SI unit of the work is joule (J)

Power is the rate of work

Power = work done ÷ time taken

Power = $\frac{F*s}{t}$

Displacement (s) ÷ time (t) = velocity (v)

Power = Force × velocity

$P=F*v$

The SI unit of the power is watt (w)

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A uniform rod of length L is pivoted at L/4 from one end. It is pulled to one side through a very small angle and allowed to osc

ludmilkaskok [199]

Answer:

T= 4.24sec

Explanation:

We are going to use the formula below to calculate.

$T=2\pi \sqrt{\frac{L}{g} }$

Where T is period

L is length of rod

g is acceleration due to gravity = $9.8m/s^{2}$

From the problem, the rod is pivoted at 1/4L which means that three quarter of the rod was used for the oscillation. lets call this $L_{O}$

$L_{O} = 3/4 * 5.95m$

= 4.4625m

thus $T=2\pi \sqrt{\frac{L_{O} }{g} }$

$T=2\pi \sqrt{\frac{4.4625 }{9.8} }$

T= 4.24sec

8 0

4 years ago

1. A group of students were trying to find the greatest

deff fn [24]

Answer:

D th

Explanation:

D B. The force applied to the ball is a balanced force.

8 0

3 years ago

What are electromagnetic waves?

Karolina [17]

Electromagnetic waves are waves consists of waves of the electromagnetic field, propagating through the space, carrying electromagnetic radiant energy. Examples includes radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays. All of these waves form part of the electromagnetic spectrum.

In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

Learn more about electromagnetic waves:

brainly.com/question/14015797

5 0

3 years ago

Read 2 more answers

Two charged concentric spheres have radii of 0.008 m and 0.018 m. The charge on the inner sphere is 3.62 10-8 C and that on the

Alekssandra [29.7K]

Answer:

The electric field is $E = 2.2625 *10^{6} \ N/C$

Explanation:

From the question we are told that

The radius of the inner sphere is $r_1 = 0.008\ m$

The radius of the outer sphere is $r _2 = 0.018 \ m$

The charge on the inner sphere is $q_1 = 3.62 *10^{-8} \ C$

The charge on the outer sphere is $q_2 = 1.62 *10^{-8} \ C$

The position from the origin is $d = 0.012 \ m$

Generally the electric field is mathematically represented as

$E = \frac{k (q_1 )}{ r^2}$

The reason for using $q_1$ for the calculation is due to the fact that the position considered is greater than the $r_1$ but less than $r_2$

Here k is the Coulomb constant with value $k = 9*10^{9} \ kg\cdot m^3\cdot s^{-4} \cdot A{-2}$

$E = \frac{9*10^9 (3.62 *10^{-8}}{0.012^2}$

$E = 2.2625 *10^{6} \ N/C$

6 0

3 years ago

If an object is moving at 2m/s towards a porcelain vase, do you think it will have enough momentum to brake the vase?

Alex Ar [27]

Answer: No

Explanation:

Momentum $p$ refers to how much force is needed to change the motion of a body or object by changing its direction or braking it. In addition, momentum is directly proportional to the mass $m$ and the velocity $v$ :

$p=mv$

Now, assuming both the object and the porcelain vase have the same velocity $v=2m/s$ but different mass, and assuming the mass of the vase is greater than the mass of the object; the momentum of the porcelain vase will be also greater than the momentum of the object.

Hence, the object will not have enough momentum to brake the vase.

8 0

4 years ago