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A spring with a spring constant of 32.0 N/cm has a block attached to one end and the other end is fixed. How much work does the spring do on the block if the spring is stretched from relaxed length
Explain the effect on the magnitude of U and D if the vaulter moves his leading hand closer to the centre of gravity of the pole while pole is still in equilibrium.
A steel wire strung between two supports is initially horizontal when there is no tension on it. When a 9.5 kg painting is hung on the wire, the wire makes a 25° angle to the horizontal, as show
The block oscillates in simple harmonic motion. If the spring constant is 95.0 N/m, determine the amplitude at which the block loses contact with the spring.
A baseball is thrown at an angle of 26? relative to the ground at a speed of 25 m/s. The ball is caught 50.2046 m from the thrower. The acceleration due to gravity is 9.81 m/s2 . How long is it in
A 240 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.00 J. Find the force constant of the spring
A resistor R and a capacitor C are connected in series to a battery of terminal voltage V0. Which of the following equations relating the current I in the circuit and the charge Q on the capacitor
A 24.0 loudspeaker is suspended 1.80 below the ceiling by two 4.00 long cables that angle outward at equal angles. What is the tension on each of the cables?
An interference pattern is observed on a screen which is a distance 4.60 m from the slits. What is the distance on the screen between the first-order bright fringe for each wavelength?
A 2.00 cm x 2.00 cm parallel-plate capacitor has a 2.20 mm spacing. The electric field strength inside the capacitor is 5.00×10^4 V/m. What is the potential difference across the capacitor? H
The coefficient of kinetic friction between a refrigerator (mass 91 kg) and the floor is 0.12, and the coefficient of static friction is 0.26. If you apply the minimum force needed to get the refrig
The athlete shown in the figure rotates a 1.00 kg discus along a circular path of radius 1.04 m. The maximum speed of the discus is 20.0 m/s. Determine the magnitude of the maximum radial accelerat
how much force must the biceps exert to hold a 1000 ball at the end of the forearm at distance = 31.0 from the elbow, with the forearm parallel to the floor? How much force must the elbow exert? Wha
The lights dim somewhat. If the internal resistance of the battery is 53 mΩ and that of the ammeter is negligible, what is the emf of the battery?
The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 3.00 kg steel block initially at rest on a frictionless surface. The collision is elastic. Find t
A package of mass m is released from rest at a warehouse loadingdock and slides down a h = 2.8 mhigh frictionless chute to a waiting truck. Unfortunately, thetruck driver went on a break without hav
what is the kinetic energy as it leaves the ground? at its highest point, B) what fraction of the initial kinetic energy has been converted to potential energy?
An 8.4 g bullet leaves the muzzle of a rifle with a speed of 621.5 m/s2. what constant force is exerted on the bullet while it is traveling down the .6 meter length of the barrel of the rifle?
A diving board of length 3.00 is supported at a point 1.00 from the end, and a diver weighing 470 stands at the free end . The diving board is of uniform cross section and weighs 255. What is the m
Suppose that we suddenly discovered that all these years. How would that affect our estimate of the distance to the Andromeda Galaxy?
A baseball outfielder throws a 0.150 kg baseball at a speed of 45.0 m/s and an initial angle of 28.0°. What is the kinetic energy of the baseball at the highest point of its trajectory?
What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radius = 0.450
A speed skater moving across frictionless ice at 9.2 m/s hits a 5.0 m wide patch of rough ice. She slows steadily, then continues on at 5.0 m/s. What is her acceleration on the rough ice?
To create artificial gravity, the space station shown in the drawing is rotating at a rate of 1.00 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 4.10. Each chamber A sim
By sound waves to people sitting across the newsroom, 3.0 m from the newscaster. Who receives the news first? Take he speed of sound in air to be 343 m/s.