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A 0.396-kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 18.5 N/m. The blockrests on a frictionless surface. An arrow with a mass of 0.0500 kg is shot horizontally at the block, hitting it with an initial speed of 2.02 m/s and sticking. How far does the block-arrow system compress the spring?
A satellite, moving in an elliptical orbit, is 357 km above Earth's surface at its farthestpoint and 184 km above at itsclosest point. Calculate the semimajor axis of the orbit. Calculate the eccentricity of the orbit.
Two cars have identical horns, each emitting a frequency offs = 395 Hz. What is thebeat frequency heard by the bystander
the altitude of a hang glider is increasing at a rate of 6.80ms. at the same time the shadow of the glider moves along
A high-speed lifting mechanism supports a 745-kg object with a steel cable that is 31.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
Three moles of an ideal monatomic gas expands at a constant pressure of 2.10 ; the volume of the gas changes from 3.30×10?2 to 4.60×10?2. Calculate the amount of work the gas does in expanding
A 0.90-kg block is suspended from a spring with a spring constant of 640.0 N/m. Find the amplitude of the subsequent motion
When it rains water vapour in the air condenses into liquid water and energy is released. How much energy is released when 0.0244m of rain falls over an area of 2.59 x 10^6 m^2? If the average energy needed to heat one home for a year is 1.40 x 10^11..
An undersea research chamber is spherical with an external diameter of 3.70m. What is the buoyant force on the chamber
Suppose a heat engine has an efficiency of 0.248 and produces 1.88×10^4 J of work. How much energy is pulled in from the hot reservoir
If the coefficient of friction between road and tires on a rainy day is 0.120, what is the minimum distance in which the car will stop.
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.44 m radius and is 1.8 m high. The walls are 1.0 cm thick.
two positive point charges q1 16 micro coulombs and q2 4 micro coulombs are seperated in a line by a distance of 3
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