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The tire on a bicycle is filled with air to a gauge pressure of 691 kPa at 20?C. What is the gauge pressure in the tire after a ride on a hot day when the tire air temperature is 48?C? (Assume constant volume and a constant atmospheric pressure of 101.3 kPa.) Answer in units of kPa.
A metal bar with a resistance of 30 ohms is rotated around its center in a magnetic field of strength 0.5 T, what is the electrical power dissipated in the resistor
The Achilles tendon inserts on the calcaneus at a distance of 8cm from the axis of the ankle joint. The force generated by the muscles attached to the Achilles tendon is 3000N, and the moment arm of this force is 5cm. a) Draw a free body diagram o..
Two equally charged particles, held 22.4 cm apart, are released from rest. The initial acceleration of the first particle is observed to be 4.0 m/s2 and that of the second particle is 6.0 m/s2. If the mass of the first particle is 3.40 x 10-7 kg, ..
A m1 = 14.50 kg object and a m2 = 10.00 kg object are suspended, joined by a cord that passes over a pulley with a radius of 10.00 cm and a mass of 3kg.
A coil has a DC resistance of 100 Ω and an impedance of 180 Ω at a frequency of 2 kHz. What is the inducatance of the coil
You drive west at 70km/h for 24 min , then follow a road that goes 38 degrees south of west, driving at 96 km/h for another 36 min. Find your average velocity for the trip
A proton is accelerated from rest through a potential difference of 450MV. Find the proton's rest energy
A krypton laser produces a cylindrical red laser beam 2.0 in diameter with 5.0 of power. What is the light intensity on a wall 2.2 away from the laser
what is the direction of its velocity relative to the frame of reference.
A 23kg child slides down a 4.0m -high playground slide. What is the change in the thermal energy of the slide and the seat of her pants
A penny of mass 3.1g rests on a small 20g block supported by a spinning disk. The coefficients of friction between the block and disk are 0.75 (static) and 0.64 (kinetic).
An object is placed 13 cm in front of a converging lens with a focal length of 1 cm. Carefully draw a ray diagram on a piece of graph paper , Is the image magnified or reduced
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