Given:
P = 1000 W, power input
c = 4190 J/(kg-K), the specific heat of water
m = 1 kg, mass of water
ΔT = 10 °C = 10 K, temperature rise.
Let t = time required to raise the temperature f the water.
Then
P*t = m*c*ΔT
(1000 J/s)*(t s) = (1 kg)*(4190 J/(kg-K)*(10 K)
1000t = 41900
t = 41.9 s
Answer: 41.9 s or 42 s (approximately)
Answer:
18.6 m/s
Explanation:
The frictional force acting on the car is given by:

But the frictional force also corresponds to the centripetal force that keeps the car in circular motion in the turn:

Where v is the maximum speed the car can achieve remaining in the turn. Substituting r=88.0 m and re-arranging the formula, we can find the value of v:

Answer:
6.3445×10⁻¹⁶ m
Explanation:
E = Accelerating voltage = 2.47×10³ V
m = Mass of electron
Distance electron travels = 33.5 cm = 0.335 cm

Deflection by Earth's Gravity

Now, Time = Distance/Velocity

∴ Magnitude of the deflection on the screen caused by the Earth's gravitational field is 6.3445×10⁻¹⁶ m
Answer:
29.412m/s
Explanation:
where F= force, m= mass, and a=acceleration
we also know that,
a = Δv / t where Δv = change in velocity and t = time
thus F = m ( Δv / t)

Δv
29.412m/s=Δv
Answer:

Explanation:
From the question we are told that:
Speed of Motor 1 
Speed of Motor 2 
Therefore
Frequency of Motor 1 
Frequency of Motor 2 
Generally the equation for Time Elapsed is mathematically given by

Where



Therefore

