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A bicyclist rides 2.93 km due east, while the resistive force from the air has a magnitude of 8.55 N and points due west. The rider then turns around and rides 2.93 km due west, back to her starting point. The resistive force from the air on the return trip has a magnitude of 8.55 N and points due east. Find the work done by the resistive force during the round trip.
A 4.89-g bullet is moving horizontally with a velocity of +345 m/s, where the sign + indicates that it is moving to the right. What is the velocity of the second block after the bullet imbeds itself
Three successive resonance frequencies of an air column are 75, 125, and 175 Hz, What is the fundamental (lowest) frequency
A 14 liter tank of helium is at a pressure of 164 kPa at a temperature of 0 C, What is the speed of the helium atoms in the tank at this new volume, How many moles of helium are there in the tank
A boy whirls a stone in a horizontal circle of radius 1.2 m and at height 1.5 m above level ground. What is the magnitude of the centripetal acceleration of the stone
The student realizes that the spring demonstrates SHM with the attached mass of 255.0 g. The student is next asked to calculate the period of oscillation, T
A bottle rocket is launched at an angle of 30 degrees from the ground with a speed of 200m/s. What is the range of the rocket if it lands on level ground
The crates are pulled to the right at a constant acceleration 3m⁄s^2 by a horizontal force F. Calculate (a) the magnitude of the force F and (b) the tension in the rope connecting the blocks. Include the free body diagram or diagrams you used.
Suppose there are two concentric thin walled conducting spheres, the inner one of radius 10 cm and the outer one of radius 12 cm. If the inner one has a charge of 2.2 C and the outer one has -2.2 C, what is the E field at a point 11 cm from the ce..
A long, narrow, uniform tube of mass M and length l rotates freely about a perpendicular axis through its CM. What will the tube's angular velocity be when this happens
An ?-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.38 106 V, What is the speed of the ?-particle
A horizontal force of 20 N pulls a block of mass 3.7 kg across a level floor. The coefficient of kinetic friction between the block, what is the final speed of the block
Assume that a 90.0 W light bulb radiates all its energy as a single wavelength of visible light. Estimate the magnetic field strength at the surface of the bulb
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