Answer: 3.2 * 10^-3 C
Explanation: In order to solve this problem we have to use the Coulomb force given by:
F=k*q^2/ d^2 where he consider the same charge for each point
so, we have
q^2= F*d^2/k= 1.137* (10 C*9*10m)^2/9*10^9 N*m^2/C^2)=3.2 * 10^-3 C.
Answer:
One boys rate is "r" and the other's is (r+10)
the distance they cover is 240 miles in 3 hours
3r + 3*(r+10) = 240
6r + 30 = 240
6r = 210
r = 35 mph and the faster car is
r + 10 = 45 mph
Answer:
Explanation:
The heat required to change the temperature of steam from 125.5 °C to 100 °C is:

The heat required to change the steam at 100°C to water at 100°C is;

The heat required to change the temperature from 100°C to 0°C is

The heat required to change the water at 0°C to ice at 0°C is:

The heat required to change the temperature of ice from 0°Cto -19.5°C is:

The total heat required to change the steam into ice is:

b)
The time taken to convert steam from 125 °C to 100°C is:

The time taken to convert steam at 100°C to water at 100°C is:

The time taken to convert water to 100° C to 0° C is:

The time taken to convert water at 0° to ice at 0° C is :

The time taken to convert ice from 0° C to -19.5° C is:

Yes it is possible. Momentum is calculated by the mass of the object times its velocity.
For example, say a bowling ball weighs 3.0kg and is travelling at a speed of 3.0m/s. Its momentum would be 3.0×3.0=9.0 kg·m/s.
Now say we have a baseball weighing 0.20kg and it is travelling at a speed of 47.0m/s. Its momentum would be 0.20×47.0=9.4 kg·m/s, which is more than that of the bowling ball.
Answer:
32 ms
Explanation:
v=32ms.
Explanation:
I will assume that you mean that the acceleration is 8.0 ms2, as 8.0ms is a value for velocity, not acceleration.
Here, we use the formula v=u+at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is time. Let's substitute values, then:
v=u+at,
v=0+8.0⋅4.0
v=32,
v=32ms.
Hope it Helps! :D .