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From the top of a cliff, a person uses a slingshot to fire a pebble straight downward, which is the negative direction. The initial speed of the pebble is 8.10 m/s.
(a) What is the acceleration (magnitude and direction) of the pebble during the downward motion?
(b) After 0.808 s, how far beneath the cliff top is the pebble?
When four people with a combined mass of 290 kg sit down in a car, they find that the car drops 0.50 cm lower on its springs. What is the frequency of the car's vibration
A 1.2 kg ball drops vertically onto a floor, hitting with a speed of 20 m s-1. It rebounds with a speed of 10 m s-1. What impulse acts on the ball during the contact
If a 4 cm piece of insulation is added to the pine ceiling kpine = 0.120 J/msC kinsul = 0.042 J/msC If a 4 cm piece of insulation is added to the pine ceiling , find the interface temperature for the pine and insulation.
Jimmy and his cart (with a combined mass of 200 kg) are moving along with a velocity v1 = 20 m/s i. What is the velocity of the combined system of two carts plus occupants after the collision
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, What emf and current are induced in the square coil
A brick of mass 1.21 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. What is the maximum speed the brick can have at the bottom of the circle before the cable will break
A glass plate (n= 1.61) is covered with a thin, uniform layer of oil (n=1.16). A light beam of variable wavelength is normally incident from air onto the oil surface. calculate the thickness of the oil film
An ore sample weighs 17.5N in air. When the sample is suspended by a light cord and totally immersed in water, the tension in the cord is 11.2N. Find the total volume of the sample
Two thin rods of length L lie along the x-axis, one between x=a/2 and x=a/2+L and the other between x= - a/2 and x= - a/2 - L. Each rod has positive charge Q distributed uniformly along its length.
a steel wire 2.04 m long with a circular cross section must stretch no more than .260 cm when a 400.3 N weight is hung from one of its ends, what is the minimum diameter must this wire have
A comet of mass m, following a trajectory that is a a parabola about the sun, collides with an equal mass at rest, determine the nature of the orbit after the collision
Find out the lengths of acceleration and deceleration phases
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