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A car is moving on a flat horizontal circular track of radius 120 m. The speed of the car is constant, 15m/s. The mass of the car is 1200 kg. Ignore air resistance.
(a) What force is keeping the car in the circle?
(b) Find this force (magnitude and direciton).
A rifle bullet is fired horizontally off the top of an ocean-based drill site. If the air resistance is negligible and the vertical distance to the water is 35 m, what additional information is needed to determine the time required for the bullet ..
An alpha particle ( a doubly ionized helium atom with a mass of 6.64 x 10^-27 kg) is traveling with a velocity v=1x10^6 m/s j, What direction is the magnetic field above
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone. Determine the angular speed of the stone at the moment of release
A hydrogen atom in the ground state absorbs a 13.06eV photon. find the wavelength of the photon emitted in this quantum jump
A uniform rectangular bookcase of height 1.63 m and width 1.03 m is to be pushed at a constant velocity across a level floor. The bookcase is pushed horizontally at its top edge, at the distance H above the floor.
The minimum stopping distance for a car travelling at a speed of 30 {rm m/s} is 60 {rm m}, including the distance travelled during the driver's reaction time of 0.54 {rm s}.
A small immersion heater is rated at 352 W. Estimate how long it will take to heat a cup of soup (suppose this is 250 mL of water) from 20°C to 50°C.
A man pushes a 16kg block from rest to speed v doing 1200 j of work in the process, during this time, find the horizontal force exerted on the block
If Argentinosaurus, a long-necked, gigantic sauropod, had a head height of 19 m and a heart height of 9.1 m, What was the blood pressure (in torr or mm Hg) at the feet
a billiard ball ,moving at 75cm/s hits an identical ball initially at rest and glances off at 75degrees to the original direction with a speed of 30 cm/s
The street automobile with the greatest acceleration is the Tempest. It has an acceleration of 6.89m/s2. Suppose the car accelerates from the rest to a final speed of 96.5km/h. How long does it take Tempest to reach this speed.
Two 8.0 coulomb light bulbs are connected in a 12 V series circuit. What is the power of both glowing bulbs
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