Other Physics Answers

 ball with a diameter of 20,00 cm is placed in water with 75% of its volume above the surface of the water. The buoyant force of the water on the ball is…?

water is flowing through a pipe with a constriction. The diameter of the narrow section is one-half the diameter of the wide section. If the velocity of the incompressible

fluid is 3,20 m/s in the wide section, then what is the velocity of the fluid in the narrow section?

Calculate the density of the moon by assuming it to be a sphere of diameter 3475 km and having a mass of 7.35 × 1022 kg. Express your answer in g/cm3

When the driver of a car travelling at 72km/h suddenly sees a pedestrian in front of the car , he applies the brakes. Consider the reaction time of the driver is 0.2s. if the maximum deceleration that the brakes can produce is 20m/s², Find the maximum stopping distance for the car

A stone is thrown vertically upwards from the ground with an initial velocity of 20ms-1.

a)What is the maximum height reached?

b)How long does the ball take to reach this maximum height?

c)How long does it take for the ball to fall to the ground again from the maximum height?

A ball falls 20meters from rest to the ground below

a)What is the velocity as it strikes the ground?

b)How long does it take to fall?

A stone takes 3s to reach the ground. What is the height above the ground ?

A motor cyclist travelling at 12m/s decelerates at 3m/s².

a) How long does it take?

b) how far does he travel in coming to rest?

A 50 kg tricycle travelling 6 m/s east and another tricycle with the same mass moving to the west at 3 m/s collided. Suppose the

collision did not damage any of the vehicles but caused the tricycles to move to the west at 3 m/s and to the east at 6 m/s, respectively.

Prove the law of conservation of momentum in this scenario.

A magnetic field B= 0.6T is directed upward through a circular loop of diameter 7 cm and 500 turns. The loop is initially horizontal, so it is perpendicular to the magnetic field. It rotates through a horizontal axis so that the plane of the loop is at 74° with the horizontal axis within 1 second. What is the magnitude of the induced emf?