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An antelope moving with constant acceleration covers the distance 70.0 m between two points in time 8.00 s. Its speed as it passes the second point is 15.3 m/s.
The process by which thoughts and actions are repeated in sequence enough times to no longer require much conscious thought is called:
A 22- rifle bullet traveling 270 buries itself in a 3.2- pendulum hanging on a 2.9--long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of
A 1.2 µF capacitor is charged to a potential difference of 11.0 V. The wires connecting the capacitor to the battery are then disconnected from the battery and connected across a second, init
A block with mass m = 15 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4234 N/m after being compressed a distance x1 = 0.536 m from the spring's unstretch
A 16 lb shell has a velocity of 2000 ft/s when it leaves the barrel of a cannon. If the barrel is 10 ft long, find the average force on hte shell while it is in the barrel
A quartz sphere is 14 cm in diameter. What will be its change in volume if it is heated from 56oF to 225oF? (the coefficient of volume expanssion of quartz is 1.50x10-6/Co) in cm^3
An electric motor rotating a workshop grinding wheel at a rate of 1.02 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.50 rad/s2.
The force exerted by the wind on the sails of a sailboat is Fsail = 450 N north. The water exerts a force of Fkeel = 190 N east. If the boat (including its crew) has a mass of 300 kg, what are the
Consider a too-small space station that consists of a 4 m radius rotating sphere. A man standing inside is 2 m tall and his feet are at 1 g. What is the acceleration of his head?
Determine the values for f (in units of rpm) when the laser is located at R_1. Determine the values for f (in units of rpm) when the laser is located at R_2.
A 2.82-kg object on a frictionless horizontal surface oscillates at the end of a spring with an amplitude of 7.88 cm. Its maximum acceleration is 3.34 m/s2. Calculate the total mechanical energy.
Two conducting wires of the same material conducting wires of the same material are to have the same resistance. One wire is 22 m long and 0.37 mm in diameter. If the other wire is 0.26 mm in diamet
Calculate the torque required to produce the acceleration, neglecting frictional torque. What force is required at the edge?
A 173 g block is pressed against a spring of force constant 1.68 kN/m until the block compresses the spring 10.1 cm. The spring rests at the bottom of a ramp inclined at 60.7° to the horizontal
A projectile is fired at an upward angle of 30.0 from the top of a 240- cliff with a speed of 195. What will be its speed when it strikes the ground below? (Use conservation of energy.)
On the basis of what you have learned about osmotic water flows, explain why diarrhea might occur.
Two cylindrical bars, each with diameter of 2.50 cm, are welded together end to end. One of the original bars is copper and is 0.360 m long. The other bar is iron and is 0.180 m long. What is the r
The front spring of a car's suspension system has a spring constant of 7.11 x 106 N/m and supports a mass of 291 kg. The wheel has a radius of 0.360 m. The car is traveling on a bumpy road, on which
What is the kinetic energy of the α particle when it reaches the other plate? The distance between the plates is 33 cm.
Suppose speakers are reconnected after being 3m apart so that the 440hz sounds they emit are exactly out of phase. At what positions are the intensity max and min?
A 45.0 kg girl is standing on a 170 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a co
A luge and its rider, with a total mass of 81 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 32 m/s. Assume that they stop with a constant deceleration of
The girl begins to walk along the plank at a constant velocity of 1.78i m/s relative to the plank. What is her and the planks velocity relative to the ice surface?
What is the induced emf in the loop at time t = 2.80 s? Take clockwise emf to be positive.