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3 years ago

Which is an example of kinetic energy?

Physics

2 answers:

alukav5142 [94]3 years ago

5 0

D . A hockey puck sliding across ice

lawyer [7]3 years ago

5 0

D. A hockey puck sliding across ice

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The idealized body that emits the maximum amount of radiation at a given temperature and absorbs all the radiation incident on i

Sidana [21]

Answer:

Black body.

Explanation:

It's the property of the blackbody that it emits the maximum amount of radiation at a given temperature and also absorbs the radiation which incident upon it.

3 0

3 years ago

It is weigh-in time for the local under-85-kg rugby team. The bathroom scale used to assess eligibility can be described by Hook

Ksivusya [100]

Answer:

Explanation:

Depression = .75 x 10⁻² m

Load = 120 g

Spring constant = 120g / .75 x 10⁻²

= 160 x 10² g / m

b )

Depression by player

= .48 x 10⁻² m

His weight

= .48 x 10⁻² x 160 x 10² g

= 76.8 kg

So he is eligible.

5 0

3 years ago

A ball resting on a roof 75 meters high has 1000 Joules of gravitational potential energy. Calculate the mass of the ball. (SHOW

Arturiano [62]

Answer:

The mass of the ball is 1.360 kilograms.

Explanation:

By Work-Energy Theorem, gravitational potential energy ( $U$ ), in joules, is the product of weight of the ball ( $W$ ), in newtons, and height ( $h$ ), in meters. Please notice that weight is the product of the mass of the ball ( $m$ ) and gravitational acceleration ( $g$ ), in meters per square second. Then, the formula for the mass of the ball is:

$m = \frac{U}{g\cdot h}$ (1)

If we know that $U = 1000\,J$ , $g = 9.807\,\frac{m}{s^{2}}$ and $h = 75\,m$ , then the mass of the ball is:

$m = \frac{U}{g\cdot h}$

$m = 1.360\,kg$

The mass of the ball is 1.360 kilograms.

8 0

3 years ago

What type of circuit is illustrated?A)closed series circuit

RoseWind [281]

I think it’s B open series circuit but I’m not sure

4 0

3 years ago

Read 2 more answers

A resistor with r = 340 ω and an inductor are connected in series across an ac source that has voltage amplitude 490 v. The rate

Arada [10]

The value of impedance Z of the circuit, when the rate at which electrical energy is dissipated in the resistor is 316 w, is 508 ohms.

<h3>What is impedance Z of the circuit?</h3>

The impedance Z of the circuit is the ratio of voltage amplitude to the maximum current.

$Z=\dfrac{V}{I}$

Here, <em>V </em>is voltage amplitude and<em> I</em> maximum current.

A resistor with R = 300 Ω and an inductor are connected in series across an ac source that has voltage amplitude 490V. The rate at which electrical energy is dissipated in the resistor is 316 W.

The rate at which electrical energy is dissipated in the resistor is the product of the resistance and the square of current. Thus,

$316=340\times I^2\\I=\sqrt{\dfrac{316}{340}}\\I=0.964\rm\; A$

The impedance Z of the circuit is,

$Z=\dfrac{V}{I}\\Z=\dfrac{490}{0.964}\\Z=508\rm\; ohm$

Thus, the value of impedance Z of the circuit, when the rate at which electrical energy is dissipated in the resistor is 316 w, is 508 ohms.

Learn more about the impedance Z of the circuit here:

brainly.com/question/24225360

#SPJ4

5 0

2 years ago