3 years ago

"a 1,600 kg car is traveling at a speed of 12.5 m/s. what is the kinetic energy of the car?"

Physics

1 answer:

xxTIMURxx [149]3 years ago

6 0

I had this question before can you show me the answers choices

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Balance the following equations: CUCO3+H2SO4- CUSO4+H2O+CO2

Setler79 [48]

Answer:

It is already balanced

Explanation:

It is already balanced

6 0

3 years ago

WHATS THE CORRECT ANSWER ANSWER ASAP

Harman [31]

Answer:

speed and velocity

Explanation:

8 0

2 years ago

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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

2 years ago

A 4,000 kg truck is moving at +10 m/s hits a 1500 kg parked car which moves off at +10 m/s. What is the velocity of the truck

Igoryamba

Answer:

10m/s

Explanation:

Using the law of conservation of momentums

M1u1+m2u2 = (m1+m2)v

Substitute.

4000(10)+1500(10) = (4000+1500)v

40,000+15,000 = 5,500v

55000 = 5500v

v = 55000/5500

v= 10m/s

Hence the velocity of the truck after Collision is 10m/s

6 0

3 years ago

What makes output energy less than input energy?

AleksAgata [21]

Answer:

part of input energy is wasted

it is used to increase the entropy of the surrounding

therefore the useful energy output is necessarily smaller than the energy input

in other words the efficiency of heat engine is always less than hundred percent

6 0

2 years ago

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