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Two cars with different masses are taking a left turn in a flat road. Which of those cars will experience a bigger (a) centripetal force? (b) centripetal acceleration?
A satellite circles the earth in an orbit whose radius is 11 times the earth's radius. Estimate the period of the satellite
The air pressure inside the tube of a car tire is 431 kPa at a temperature of 14.5 °C. What is the air pressure inside the tube
A ray of light strikes a plane mirror at a 45° angle of incidence. The mirror is then rotated by 23° in the clockwise direction, while the incident ray is kept fixed. (a) Through what angle does the reflected ray rotate? (b) What is the answer to par..
A variable-speed drill, initially turning at 250 rpm, speeds up to 1300 rpm in a time interval of 0.1 s. What is its average rotational acceleration
In a certain time period a coil of wire is rotated from oneorientation to another with respect to a uniform 0.38-T magneticfield. The emf emf induced in the coil is4.7 V. Other things being equal, whatwould the induced emf be if the field had a ma..
a plastic bag is filled with helium at atmospheric pressure and 23.0 oc. assume that the mass of the bag is negligible
A proton moves through a magnetic field at 29.7% of the speed of light At a location where the field has a magnitude of 0.00639 T and the proton's velocity makes an angle of 119 degree with the field. what is the magnitude of the magnetic force actin..
For exercise, a 60 kg athlete runs up a 10-m high hill in 30 seconds. Assume the efficiency of the human body is 25%. Determine her metabolic power
A man strikes a nail with a 1kg hammer. The speed of the hammer just before it strikes the nail is 5m/s, What is the force exerted on the nail by the hammer
A 1.11 10-3 µF capacitor has an initial charge of 0.100 C. When a resistor is connected across the capacitor plates, there is an initial current through the resistor of 1.04 A. What is the current 1.10 s later?
A loudspeaker is placed between two observers who are 120 m apart, along line connecting them. If one observer records a sound level of 52.8 dB and the other records a sound level of 83.5 dB, how far is the speaker from each observer? Enter the longe..
the electric potential at a position located a distance of 22.8 mm from a positive point charge of 8.00times10-9c and
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