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A bicyclist of mass 78 kg putsall his weight on each downward-moving pedal as he pedals up asteep road. Take the diameter of the circle in which the pedalsrotate to be 0.40 m, and determine the magnitude of the maximum torque he exerts.
Nm
An object is placed 19 cm to the left of a converging lens of focal length 29 cm. Find the position and magnification of the final image
A 19 g bullet is shot into a 5270-g wooden block standing on a frictionless surface. The block, with the bullet in it, acquires a velocity of 2.4 m/s. compute the velocity of the bullet before striking block.
Point charges of +1nc, +3nc and -3nc are located at each of three corners of an equilateral triangle with side length of 30cm. Find the net electrostatic fornce exerted on the +1nc charge.
At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.1 m/s2. How fast will the automobile be traveling at that instant
A satellite is circling a small planet at a speed of 3.60 rev/day. If the satellite's orbit has a diameter of 30,000 km, how fast is the satellite moving
Light of wavelength 550 nm falls on a 0.50 mm wide slit and forms a diffraction pattern on a screen 1.7 m away. Find the width of the central maximum
Two blocks, m1=1.0kg and m2=2.0kg are connected by a light string over a pulley. what is the acceleration of the system
A capacitor with parallel circular plates of radius R is discharging via a current of 20.0 A. How much displacement current is encircled by the loop
In order to view the craters of the Moon, you construct a refracting telescope from a lens with focal length 90.7 cm as its objective and a 11.5-cm focal length lens as its eyepiece
A cyclist intends to cycle up a hill whose vertical height is 170m. Assuming the mass of bicycle plus cyclist is 75kg , calculate how much work must be done against gravity
0.0024 J of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2 and are 1.5 mm apart. What is the electric field energy density between the plates
A bungee cord is stretched between two poles with a force of 407 N. What is the velocity of a wave on this bungee cord
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