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A 1970-kg car is moving down a road with a slope of 14% while speeding up at a rate of 3m/s^2. What is the direction and magnitude of the frictional force?
An astronaut on a distant planet wants to determine its acceleration due to gravity. What is the acceleration due to gravity on this planet
a total of 25 rm kg of bananas on their way to the market. Assume that the springs have somehow not yet compressed to their maximum amount. Explain how much are the springs compressed?
A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 3.6 J of work is required to compress the spring by 0.1 m. Find the value of the mass
The hunter uses a small powerboat that moves at a maximum speed of 14 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
After 1.86 days, the activity of a sample of an unknown type radioactive material has decreased to 88.8% of the initial activity
A 30 ohm resistor has a voltage difference of 3 volts across its leads. What is the power being dissapated in the resistor
For a double-slit experiment with slit spacing 0.2 and wavelength 600, at what angular position is the path difference equal to one-fourth the wavelength.
Two speakers, 6.00 m apart, are driven by the same audio oscillator so that each one produces a sound consisting of two distinct frequencies, 1000 Hz and 1360 Hz. The speed of sound in the room is 350 m/s.
A mass of 400 grams hangs from the rim of a wheel of radius 15cm. When released from rest, the mass falls 2 m in 6.5 sec. Find the moment of inertia of the wheel
An 850g- iron block is heated to 370C and placed in an insulated container (of negligible heat capacity) containing 41.0g of water at 23.0C a).What is the equilibrium temperature of this system? The average specific heat of iron over this temperat..
In a purely inductive AC circuit, L=25.0 mH and the rms voltage is 150 V. Calculate the inductive reactance and the rms current in the circuit
A 1,8000-kg SUV rounds a flay (unbanked) curve with a radius of 90m. the average coefficients of kinetic and static friction between the tire of the car and the road are static coefficient = 0.85, What is the maximun driving speed for the car
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