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Q. Three equal point charges, each with charge 1.05 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.700 m. What is the electric potential energy U of the system?
Q. What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.0?
A gas has a volume of 3m3 when it is at the temperature of 23K. It's temperature now hoes up to 46K. WHat is it's new volume.
The magnitude of q is chosen to make the potential difference between spheres 430 V, with the inner sphere at higher potential. Compute q.
Whole blood has a surface tension of 0.068 N/M & a density of 1050kgm-3.what weight can whole blood rise in a capillary blood vessel that has radius 2.0 x 10-6 if the contact is zero.
How many kilograms of water at 100.0 C could be converted to steam by the addition of 1.13 x 10^7 joules of thermal energy.
spring system is allowed to come to a static equilibrium. How much does spring stretch.
A truck travels beneath an airplane that is moving 190 km/h at an angle of 26? to the ground.
A 7 kg bowling ball moves at 2.15 m/s. How fast should a 2.40 g Ping-Pong ball move so that the two balls have the same kinetic energy.
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was completed by friction on Megan? Imagine that air resistance is negligible.
A jeweler working with a heated 43 gram gold ring must lower the ring's temperature t make it safe to handle. If the ring is initially at 94 degrees Celsius, what mass of water at 22 degrees Celsius is necessary to lower the ring's temperature to 38 ..
What is the new acceleration of box
How many joules of kinetic energy does a 750-{rm kg} automobile travelling at the typical highway speed of 65 {rm{ mi/h}} have.
A 75 kg parachutist descends through a vertical height of 310 m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21°C.
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