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a copper piece of mass 10g is suspended by a vertical spring. The spring elongates 1 cm over its natural length to keep the piece in equilibrium. A beaker containing water is now placed below the piece so as to immerse the piece completely in water. Find the elongation of the spring. Density of copper = 9000kg/m^3. Take g = 10m/s^2.
One way to attack a satellite in Earth orbit is to launch a swarm of pellets in the same orbit as the satellite but in the opposite direction. Suppose a satellite in a circular orbit 360 km above Earth's surface collides with a pellet having mass ..
The mass of Mercury is 0.0550 times that of earth, and its radius is 0.380 times that of earth, Calculate the average density of Mercury (in kg/m3) given the earth's density is 5.52×103 kg/m3
Two 9cm diameter charged disks face each other, 25cm apart. Both disks are charged to - 80 nC.
When resting, a person has a metabolic rate of about 3.0 105 joules per hour. The person is submerged neck-deep into a tub containing 1.12 103 kg of water at 22.10° C. find the water temperature after half an hour
Lemur and Chimp find a 200-kg treasure chest filled with gold plated bananas. What is the speed of the treasure chest after sliding 30 m down the incline
A Carnot engine operates between reservoirs at 550K and 300K, discarding 1500 J of heat in each cycle. determine the engine's efficiency
Calculate the electric force Fe between a stationary proton and uranium nucleus...separated by a distance of 3.6 nm, determine the intial acceleration of the proton
What is the magnitude of vertical component of its velocity as it strikes the ground.
I just got this wrong for the third time. A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure.
A proton is confined to a nucleus that has a diameter of 8.3 × 10-15 m. what is the minimum uncertainty in its momentum
he density of free electrons in gold is 5.90x10^28 m^-3. The resistivity of gold is 2.44x10^-8 ohms.m at a temperature of 20 C, what is the drift velocity of the electrons in the wire
Consider a 9.5-mm-diameter wire made from copper (mass density 8.9 g/cc, resistivity 1.7E-8 ohm-m). What is the electric field (in V/m) in the wire
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