Answer:
1.1x10^-2N
Explanation:
We have the change in momentum as
P = 0.3(4.5+12)g.mph
= 0.3x0.447x(4.5+12)x10^-3
Then the force that is exerted will be
F = p/∆t
∆t = 0.2
= 0.3x0.447x(4.5+12)x10^-3/0.2
= 0.1341x16.5x10^-3/0.2
= 1.1x10^-2
Therefore the force that was exerted is equal to 1.1x10^-2
Answer:
Your mobile charger is an example of (d.) a generator.
Explanation:
Your mobile charger generates energy to charge your device.
The answer is B.
t = Vy / g
t =( 19 x sin21 ) / 9.8 = 0.69s
Answer:
the dish's acceleration is 0.375 m/s^2.
Explanation:
Recall the formula from Newton's 2nd Law:
Force = mass x acceleration.
Since we know the force in the direction of the movement (0.15 N), and we know the mass of the object (0.4 kg) , its acceleration is given by:
acceleration = force / mass = 0.15 N / 0.4 kg = 0.375 m/s^2
Conduction, Convection, and Radiation
