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How far could you pedal a bicycle at 15 km/hr on the energy in 3.0 gal of gas? ( 1 gal of gas has a mass of 3.2 kg.) Assume a 68 kg person and that the heat of combustion for gas is 44 MJ/kg.
A 1.5-kg mass attached to spring with a force constant of 20.N/m oscillates on a horizontal, frictionless track. At t=0, the mass is released from rest at x=10.0 cm (That is, the spring is stretched by 10.00cm)
A parallel-plate air capacitor with a capacitance of 233 has a charge of magnitude 0.159muC on each plate. What is the surface-charge density on each plate
An ambulance moving at 37 m/s sounds its siren whose frequency is 500 Hz. What frequency does a person in the car hear as the ambulance approaches the car
Your mobile typically consumes about 420 mW of power when you text a friend. find the current flowing through the mobile circuitry under these circumstances
A 1 m long wire, fixed at both ends, is supporting a standing wave with 3 anti-nodes, and a frequency of 500 Hz. what is the tension on the wire
A spring is standing upright on a table with its bottom end fastened to the table. A block is dropped from a height 4.4 cmabove the top of the spring. The block sticks to the top end of thespring and then oscillates with an amplitude of 13 cm.
a series combination of a 9 k resistor and an unknown capacitor is connected to a 12 v battery. one second after the
A U-shaped tube is connected to a box at one end and open to the air at the other end. What is the gas pressure inside the box
A pipe is opened at both ends. Its length is 22.81cm. If i excite standing waves in the pipe by blowing air over one of its ends, I hear a pitch of 712.5 Hz. a) find the distance between the antinodes at the two ends of the pipe.
A face appears in a convex mirror; face is 75% its normal size and appears to be 24cm behind the mirror. How far was the face standing from the mirror
a ball is suspended from 3.0 m long cable that makes a 30degree angle with vertical. Ball is released and swings down. What is ball's speed at lowest point
Assume the electric field near the northwest corner of your table is uniform at 3x10^4N/C. We assign 0 as the value of electric potential at the corner. What is the potential 2cm south of the corner?
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