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A 10.0- shell is traveling horizontally to the right at 25.0 relative to the ground when it explodes into two fragments, one of mass 3.00 and the other of mass 7.00 . The lighter fragment goes directly forward, and the explosion releases 1.50 × 103 of mechanical energy to the fragments. Find the magnitude of the velocity of the heavier fragment relative to the ground just after the explosion.
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
The drawing shows a person looking at a building on top of which an antenna is mounted. The horizontal distance between the person's eyes and the building is 84.4 m. How tall is the antenna
A 2 meter wire carrying 1 A of current is at a 90 degree angle to a magnetic field. If the current feels a force of 1 N from the magnetic field, what is the strength of the field
A hang glider and its passenger has a mass of 95kg. The wing has an area of 11.0m^2. what must be the airspeed above the wing to create lift
A wire has a length of 6.20 10-2 m and is used to make a circular coil of one turn. obtain the maximum torque that this coil can experience
A heart pacemaker fires 66 times a minute, each time a 29.0-nF capacitor is charged (by a battery in series with a resistor) to 0.632 of its full voltage
A 2.6kg block slides along a frictionless surface at 2.0m/s . A second block, sliding at a faster 5.0m/s, collides with the first from behind and sticks to it. What was the mass of the second block
A ladybug is sitting at the center of a turntable. The turntable is rotating on a frictionless bearings and it rotates without assistance from a motor. As the ladybug walks to the edge of the turntable, what happens to combined angular momentum of..
a person of mass 50 kg rides in a ferris wheel of radius 20 m. the ferris wheel completes a rotation once every 10
A uniform cylinder of mass m=8.26 kg and radius R=0.147 m is released from rest on an inclined plane (theta=42.4 deg), What is the magnitude of the angular velocity just before the cylinder reaches the horizontal surface
A 1.5 kg box moves back and forth on a horizontal frictionless surface between two different springs with spring constants of 16 N/cm and 32 N/cm. What is the maximum speed the box will reach
A basketball leaves a player's hands at a height of 2.20m above the floor. what is the range of initial speeds allowed to make the basket
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