3 years ago

A car has a kinetic energy of 4.33x10^5 J when traveling a speed of 25 m/s. What is the mass ?

Physics

1 answer:

madreJ [45]3 years ago

4 0

4.33x50

10^5 would be 50 so 50/25

You might be interested in

Describe the responses of the human ear to sound waves coming from the

maria [59]

If the sound comes from the right side, the waves reach the right ear before the left ear. if the sound comes from the left side, the waves reach the left ear before the right ear. The difference between the phases of waves reaching both ears is detected by the ears and then interpreted by the brain

8 0

3 years ago

Introduction Team Problem 2 You jump into the deep end of Legion Pool and swim to the bottom with a pressure gauge. The gauge at

Kaylis [27]

Answer:

Depth of the pool, h = 4.004 cm

Explanation:

Pressure at the bottom, P = 39240 N/m²

The density of water, d = 1000 kg/m³

The pressure at the bottom is given by :

P = dgh

We need to find the depth of pool. Let h is the depth of the pool. So,

$h=\dfrac{P}{dg}$

$h=\dfrac{39240\ N/m^2}{1000\ kg/m^3\times 9.8\ m/s^2}$

h = 4.004 m

So, the pool is 4.004 meters pool. Hence, this is the required solution.

5 0

4 years ago

Physics multiple choice

Aleksandr-060686 [28]

10. b

11.d

12. b

13.e

I hope this helps

3 0

4 years ago

Read 2 more answers

The force required to maintain an object at a constant velocity in free space is equal to

alex41 [277]

Answer:

The force required to maintain an object at a constant velocity in free space is equal to Zero.

7 0

3 years ago

A 120-V motor has mechanical power output of 2.20 hp. It is 91.0% efficient in converting power that it takes in by electrical t

Mandarinka [93]

Answer:

a) $i = 15.033\,A$ , b) $\dot E_{in} = 1.804\,kW$ , c) $C = 0.496\,USD$

Explanation:

a) Electric power transmitted into the motor is:

$\dot E _{in} = \frac{(2.20\,hp)\cdot \left(0.746\,\frac{kW}{hp} \right)}{0.91}$

$\dot E_{in} = 1.804\,kW$

The current in the motor is:

$i = \frac{1804\,W}{120\,V}$

$i = 15.033\,A$

b) The energy delivered to the motor is:

$\dot E_{in} = 1.804\,kW$

c) The cost of running the motor for 2.50 hours is:

$C = (1.804\,kW)\cdot (2.5\,h)\cdot \left(3600\,\frac{s}{h} \right)\cdot \left(\frac{1}{3600}\,\frac{kWh}{kJ} \right)\cdot \left(0.110\,\frac{USD}{kWh} \right)$

$C = 0.496\,USD$

4 0

4 years ago