Other Physics Answers

A 10g riffle bullet acquires a speed of 400m/s in traversing a barrel 50cm long. Find the average

acceleration and the accelerating force.

A 1.5 N stone is thrown vertically upward with an initial speed of 15 m/s. Calculate

a. P.E at the maximum height

b. K.E at the instant it will strike the ground

c. P.E after 1 s

d. K.E after 1 s

A 0.25-hp motor is used to lift a load at the rate of 5.0 cm/s. How great a load can it lift at this constant speed?

3. Three capacitors with capacitances 5 μF, 10 μF and 15 μF are connected in parallel. Find the capacitance of the combination. If they are connected to a battery of 240 V, find the charge in each capacitor.

4. Three capacitors with capacitances 4 μF, 8 μF, and 12 μF are connected in series. A voltage of 400 V is applied to the combination. (a) Find the charge in each capacitor. (b) What is the voltage across each capacitor?

with solution thank you!

1. Find the charge stored in a capacitor with a capacitance of 50 μF and a potential difference of 10 V.

2. A 5 μF capacitor is parallel with a 10 μF capacitor. Connected is series with this combination is another 5 μF capacitor. A voltage of 120 V is applied to the whole combination. Find the charge stored in each capacitor and the voltage across each capacitor.

with solution thank you!

1. Two electrons are separated by a distance of 5.6×10^-11 m in air.

a. Find the magnitude of the electrical force one electron exerts on the other. Is this force attractive or repulsive?

b. Find the magnitude of the gravitational force one electron exerts on the other. Is this force attractive or repulsive?

A car is moving at a speed of 25 m/sec around a level curve of radius 100 m. What is the minimum value of the coefficient of static friction between the tires and the road required to prevent the car from skidding?

How many electrons are present in a wire if a 1.5 A current passes through the conductor in 2 minutes?

A car P is 300m behind a car B and both are traveling in the same direction at 25ms–¹. Neglecting the length of the cars.

(i) calculate the acceleration of P.

(ii) it's velocity at the moment of passing B.

(iii) The distance it has travelled in 20s.

A particle at opposition r=I+ 2j+ 3k is acted upon by a force F 2= 4i +5j +6k.

Evaluate the torque experienced by the particle.