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By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.80 m/s and v2 = 1.85 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the floor. After the collision, the component of the total momentum parallel to the floor must remain zero, since the net external force acting on the plate has no component parallel to the floor. Using the data shown in the drawing, find the masses of pieces 1 and 2. m1 = 1 kg m2 = 2 kg
Daisy throws a rock horizontally with a speed of 12 m/s from a bridge. It falls 2.28 s before reaching the water below. When the rock hits the water it is traveling with what horizontal component of the velocity.
Joseph is standing 0.80 meters in front of a big spherical mirror (concave mirror), and sees his image upright and magnified 3.0x bigger than he is. Find the radius of curvature of the mirror
The piezoelectric transducers of the ultrasound machine generatefrequencies of 7.4 MHz and 10.5 MHz. Assuming that one wavelength is the size of the smallest object that can be imaged,
a playground merry go round has a radius of 4.40 m and a moment of inertia of 245kg.m^2 and turns with negligible friction about a vertical axle through is center. What is the average power supplied by the child
A playground is on the flat roof of a city school, 7.00 m above the street below. The vertical wall of the building is 8.00 m high, forming a 1.00 m high railing around the playground. Find the speed at which the ball was launched
A car with a mass of 2200 kg is traveling at a speed of 40.0 km/h on an icy road when it collides with a 10000 kg truck which was traveling toward the car with the speed of 18 km/h
A train has a rest length of 100 m. Traveling at a very high velocity, it goes through a tunnel of length 60 m. What is the velocity of the train expressed in units of c
A collision between two pucks on an air-hockey table. Puck A has a mass of 0.025 kg and is moving along the x-axis with a velocity of +5.5 m/s. It makes a collison with puck B, which has a mass of 0.050 kg and is initially at rest.
A ball with an intial velocity of 8.00 m/s rolls up a hill without slipping. Treating the ball as a spherical shell, calculate the vertical height it reaches
The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. Illustrate what is the work done on the disk by the spring during one full circle?
A 4-kg block lies on a horizontal table whose coefficient of friction is 0.3. A horizontal rope is redirected by a uniform solid disk (pulley) of mass 2 kg to a mass of 12-kg hanging off the table. What is the angular acceleration of the disk
Calculate the change in specific entropy of air as it is expanded from 2500kPa and 550 degrees C to 120kPa and 65 degrees C
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