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An object, with mass m and speed v relative to an observer, explodes into two pieces, one three times as massive as the other; the explosion takes place in deep space. The less massive piece stops relative to the observer. How much kinetic energy is added to the system during the explosion, as measured in the observer's reference frame.
The edge of the thimble of a micrometer moves a distance of 2.0 mm when it is given four complete revolutions. Find the pitch of the micrometer
The crankshaft in a race car goes from rest to 3480 rpm in 2.7s. What is the crankshaft's angular acceleration
A certain puddle of water has 1025 identical water molecules. As the temperature of this puddle falls to 0°C and below, the puddle freezes, resulting in a considerable change in the thermodynamic properties of this system.
A beam of light traveling in air strikes the surface of mineral oil at an angle of 20.7° with the normal to the surface. find the index of refraction of mineral oil
An amazing parent pushes their child's sled (total mass = 65kg) so that the sled is moving at 5 m/s at the top at the sledding hill which makes a 20 degree angle with the horizontal. calculate the speed of the sled
An arterial constriction causes the radius of an artery to decrease from its normal value of 4mm to 2.5 mm. Calculate the volume flow rate through the artery
There are two identical, positively charged conducting spheres fixed in space. find the initial charge on each sphere
Find the strength of the magnetic field that causes a torque of 2.09 × 10-5 N·m to act on the loop when a current of 0.00361 A flows in it
A small droplet of oil with mass of 3.04×10-15 kg is held suspended in a region of uniform electric field directed upward with a magnitude of 5325 N/C
q1. a crate of 30.2- tools rests on a horizontal floor. you exert a regularly increasing horizontal push on it and
A person in a car is driving down a straight road. The instantaneous acceleration is decreasing with time, What is happening to the speed of the car
Consider a simple plane pendulum consisting of mass m attached to a string of length l. find the tension of the pendulum string
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