3 years ago

A CD player uses 1200 J of energy in 60 seconds what is the power rating of the CD player

Physics

1 answer:

tiny-mole [99]3 years ago

8 0

The power equals energy divided by the time

P=E/t

P=1200/60

P=20W

Hope you get it!

You might be interested in

These graphs show measurements of the density of air as different sound waves pass a single point.

Ymorist [56]

Answer: D!

It is the option with the greatest amplitude.

5 0

3 years ago

Read 2 more answers

Heat is added to a 2kg piece of ice at a rate of 793kW. How long will it take for ice to melt if it was initially 0?

Ede4ka [16]

Answer:

0.84 s

Explanation:

Step 1

Given information:

Mass of the ice (m) = 2.0 kg

Heat transfer rate (Q/T) = 793.0 kW

Latent heat of fusion of ice (Lf) = 334 kJ/kg

$\frac{Q}{T} = \frac{mLf}{T}$

Substituting the corresponding values we have:

$793.0 kW= \frac{2.0kg(334 kJ/kg)}{T} \\ T = \frac{2.0kg(334 kJ/kg)}{793.0kW} = \frac{668kJ}{793kW} \\ = 0.84s$

8 0

3 years ago

An object has a mass of 25 kg. What is the force of gravity acting on the object?

aleksandrvk [35]

Answer:

Explanation:

Because u don't know the gravity so u take that force and just put it in the gravity spot

5 0

3 years ago

Someone help with this also

Mumz [18]

I’m pretty sure it’s average speed= total distance and total time which is A.

3 0

3 years ago

The element sulfur is most likely to form covalent bonds with element

atroni [7]

The answer is oxygen.

5 0

3 years ago

Read 2 more answers