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A bicyclist is coasting straight down a hill at a constant speed. The mass of the rider and bicycle is 60.0 kg, and the hill is inclined at 18.0° with respect to the horizontal. Air resistance opposes the motion of the cyclist. Later, the bicyclist climbs the same hill at the same constant speed. How much force (directed parallel to the hill) must be applied to the bicycle in order for the bicyclist to climb the hill?
a popoular size of scuba diving take is 71.2 ft3 because this is the volume that the compressed air inside the tank
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 790-kg car traveling with a velocity of +2.40 m/s. What is the final velocity of each vehicle
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the similar as that of the spider's thread.
A proton with a speed of 2.5 × 106 m/s is shot into a region between two plates that are separated by a distance of 0.16 m. What must be the magnitude of the magnetic field
The diffraction pattern produced by the aperture is observed on a screen at a distance of 4 m from the aperture. The power density at the centre of diffraction pattern is measured to be 7 W/m2.
A 10.0 g piece of clay is launched horizontally at 108-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 148 N/m
Two charges charges of -2.1 micro-coulombs and a charge of +2.1 micro-coulombs are placed on the corners of an equilateral triangle where the length of a side is 44 cm as shown in the sketch below. What is the magnitude of the total electric field..
Examining your image in a convex mirror whose radius of curvature is 24.8cm , you stand with the tip of your nose 10.2cm from the surface of the mirror. Where is the image of your nose located
While standing at a crosswalk, you hear a frequency of540 Hz from an approaching police car. What is the velocity of the police car
a pendulum of length l and mass m hangs from a bead of mass m that moves frictionlessly along the curve yx4 . use y the
Consider the following circuit with emf = 12 V, C = 2 microF, L = 6 microH, and R = 6ohms. What is the value of the energy stored in the inductor
0.60 kg rubber ball has a speed of 2.30 m/s at point A and kinetic energy of 8.3 J at point B. (a) Determine the ball's kinetic energy at A (b) Determine the ball's speed at B (c) Determine the total work done on the ball from A to B
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