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A car with a mass of 1200.0kg is travelling over the top of a hill, as shown in the diagram. The hill's curvature has a radius of 45.0m, and the car is travelling at 13.0m/s.
Determine the net force acting on the car as it goes over the very top of the circular-shaped hill.
Determine the normal force acting on the car when it reaches the very top of the hill.
In fluorescence microscopy, an important tool in biology, a laser beam is absorbed by target molecules in a sample. what minimum energy must each pulse have
A spring with spring constant 12.5 hangs from the ceiling. A 400 ball is attached to the spring and allowed to come to rest. It is then pulled down 6.80 and released. What is the time constant if the ball's amplitude has decreased to 3.90 after 57.0 ..
A gas in a cylinder with a piston that slides freely within is adiabatically expanded from 1.5 to 1.7 m3. by what amount did the internal energy of the gas change during this expansion
Doppler speed meter operating at exactly 1.02 x 10^5 Hz emits sound waves in the direction of anoncoming baseball. The meter detects the reflected sound waves and measures a beat frequency of .30X10
a man stands on a platform that is rotating without friction with an angular speed of 1.2 revs his arms are
Consider a star of mass M=10Msun, composed entirely of fully ionized C-12. Its core temperature is 6*10^8K. Suppose the star produces energy via the reaction C12 + C12 --> Mg24. the atomic weight of C12 is 12, and that of Mg24 is 23.985. What fractio..
How much electricity does the power plant generate in kWh per annum and How much coal does the plant consume per annum in tonnes
Calculate what is the total charge (in coulombs) on all the electrons in 7 kilogram of water (H2O)
Find the cost of ising a 3kW immersion heater and five 60 W electric bulbs for a day if the price per unit (kWh) is sh. 4.50
Up where the ISS (International Space Station) orbits at 387 km, even though they are weightless there still is an acceleration due to gravity. Calculate its value and what it is in respect to 8g at the Earth's surface.
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
A sign for the local cheese shop is hung by two strings of length 0.25 meters at either end from a 4 meter long pole with a mass of 200 kg. what is the coefficient of static friction between the wall and the pole
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