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A car with a mass of 1500kg moving at 40m/s comes to a stop in8 seconds.
What is the change in momentum of the car?
What is the magnitude of the breaking force need to stop thecar in 8 seconds?
A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field B = 0.3 T k hat. Calculate the magnitude of the torque on the loop
During a rockslide, a 270kg rock slides from rest down ahillside that is 480m long and 300m high. How much mechanical energy is dissipated by the normal forceduring the slide down the hill
Two same-size metal posts, one aluminum and one copper, are subjected to equal shear stresses. which post will show the larger deformation angle
When doing a sound experiment, you recorded the sound of a single frequency sound when it was stationary. What frequency did you hear as your friend rode away from you
The fastest that anyone has gotten to the top of a local mountain (elevation change of 3500 ft) is 44 minutes. Assume a weight of 160 lb for the bike and rider. What was the average power output used for this ride?
The small piston of a hydraulic lift has a cross-sectional area of 3.30 cm2, and its large piston has a cross-sectional area of 197 cm2. What downward force of magnitude F1 must be applied to the small piston for the lift to raise a load whose weight..
A muon and an antimuon are moving in opposite directions with velocities of -0.4 c and 0.4 c, respectively. When they collide, they can annihilate each other and turn into two photons. Both muon and antimuon have a mass of 105.66 MeV/c2.
A projectile is projected from the origin with a velocity of 25.0 m/s at an angle of 50.0 degrees above the horizontal. What is the time of maximum height of the projectile? A.)2.03 s B.)3.45 s C.)1.95 s D.)2.67 s E.)3.01 s
Inside of a nucleus nucleons (protons and neutrons) are confined within dimensions of 15x10-15m. Treating nucleons are particles in an infinite well, calculate the lowest energy of a photon emitted due to transition of nucleons between nuclear energy..
The lower boundary of the plate is defined by: y = 0.650 x2. The plate has a mass of 3.70 kg. Find the moment of inertia of the plate about the y-axis
The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state
Decide the speed with the rock is thrown
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