We are
given that:
m = 5.5 kg
d = 12 m
t = 1.75 s
Using the
distance formula, we can get the acceleration of the ball:
d = (1/2) a*t^2
Rearranging:
a = 2d/t^2
= 2*(12 m)/(1.75 s)^2
a = 7.837
m/s^2
<span>Using
Newton’s 2nd law, force is defines as:</span>
F = ma
F = 5.5 kg
(7.837 m/s^2)
<span>F = 43.10
N</span>
Explanation:
This question is not feasible. There is no way to calculate the energy needed because the question is missing the final temperature
Answer:
energy is equal to mass times latent heat.
so, E = 1.4×2.32×10^4=44800 j
The correct answer is second
Answer:
EMF of the power source, E = 19.34 volts
Explanation:
It is given that,
Voltage at which computer sensor is operated, V = 11.7 V
Power, P = 26.37 W
Total resistance of the power source, R = 2.23 Ohms
Firstly, calculating the current in the circuit. It is calculated as :



I = 3.43 A
Let E is the emf of the power source. It is given by,


E = 19.34 volts
Hence, the EMF of the power source is 19.34 volts. Hence, this is the required solution.