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Q1. A 5.19 g lead bullet travelling at 252 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in temperature of bullet?
Q2. If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km?
Take the mass of the sun to be m_s = 1.98×1030 {rm kg}, the gravitational constant to be G = 6.67×10-11 {rm N} cdot {rm m^2/kg^2}, and acceleration by reason of gravity at the earth's surface to be g = 9.910 {rm m/s^2}.
A standing wave on a string that is fixed at both ends has frequency 80.0 Hz. What is the speed of the waves on the string
A 2.5 meter long elastic cord is fixed at both ends. at what frequency should this cord be vibrated such that a n-10 standing wave is produced
A horse pulls a cart with a force of 61 lb at an angle of 25° above the horizontal and moves along at a speed of 8.5 mi/h. What is the average power (in horsepower, hp) of the force
18th Century cannon had a maximum range of 1.10 miles when fired on level ground. Find the velocity of the cannonball as it leaves the cannon
A sample of the radioactive nuclide is prepared that has an initial activity of 7.28×1011 .92.4 after the sample is prepared, What is the half-life of this nuclide
how many electrons have been transferred. If a metric ton is 1.000 103 kg, how various 90 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton.
Suppose that you start with 1.41 mg of a pure radioactive substance and 2.30 h later determine that only 0.252 mg of the substance remains
A 1.3 m length of wire carrying 5.9 A of current toward the south is oriented horizontally. Estimate the magnitude of the magnetic force on the wire due to the Earth's magnetic field of 5.5 ? 10-5 T at this point
Find the focal length of a concave mirror if an object 12cm from the mirror has a virtual image 2.1 times the object's actual size
A train is rounding a circular curve whose radius is 200 m. At one instant, the train has an angular acceleration of .0015 rad/s2, Determine the angle of the total acceleration relative to the radial direction
An old-fashioned (vinyl) record rotates at a constant rate of 45 rpm. how far does a point on the edge travel
An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.43 m/s. What is the car's speed after the loading is completed
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