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Two particles moving under the influence of their mutual gravitational force describe circular orbits about one another with a period T. If they are suddenly stopped in their orbits and allowed to
What is the apparent weight (the the normal force exerted on her by the bench) of the person as she passes through the highest point of her motion?
If s sound wave that is traveling in air approaches a flat water surface with an angle of incidence of 12.0 degrees, what is the angle of refraction.
Two objects with masses 4.60 kg and 1.10 kg hang 0.800 m above the floor from the ends of a cord 6.90 m long passing over a frictionless pulley. Both objects start from rest. Find the maximum heigh
A cube of ice is taken from the freezer at -8.5 degrees celcius and placed in a 75 gram aluminum calorimeter filled with 300 g of water at room temperature of 20.0 degrees celcius. The final situat
A horizontal 790-N merry-go-round of radius 1.30 m is started from rest by a constant horizontal force of 50 N applied tangentially to the merry-go-round. Find the kinetic energy of the merry-go-ro
It is now allowed to relax back to its equilibrium length and then it is stretched an additional 2.30 cm. How much work is done by the spring during this process?
A grinding wheel of radius 0.350 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 75.0
The spring stretches 0.200m. The block is pulled at a constant speed of 0.0500 m. What is the spring constant and the coefficient of kinetic friction.
An electromagnetic plane wave in vacuum has a maximum electric field of magnitude Emax = 218 N/C and a frequency of 23 MHz. Find the maximum magnitude of magnetic field, B, in this EM wave.
The distance between two successive maxima of a transverse wave is 1.70 m. Eight crests, or maxima, pass a given point along the direction of travel every 10.0 s. Calculate the wave speed.
Calculate all of the possible values of theta for light of wavelength 4000Angstroms and of 7000Angsroms using a grating of 600lines/mm?
The position vector for an electron is R = (5.0 m)i - (3.0 m)j + (2.0 m)k. (a) Find the magnitude of r. (b) Sketch the vector on a right-handed coordinate system.
Sally applies a force of 462 N along a rope to drag a wooden crate (m=85.0 kg) across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 56.0°? relative to the g
Straight-line path through the air and water after it is released, determine the angle below the horizontal that you should aim your spear gun in order to catch dinner.
Compare the deflection of the end of a cantilever beam if you put twice the weight (2W) at the midpoint of the beam instead of W at the end of the beam. (Using equation y = - W(3ax^2 - x^3)/ 6EI wh
Two airplanes taxi as they approach the terminal. What are the direction and magnitude of the velocity of plane 1 relative to plane 2?
A 2.0 cm x 2.0 cm parallel-plate capacitor has a 3.0 mm spacing. The electric field strength inside the capacitor is 1.5×105 V/m. What is the potential difference across the capacitor?
A charge of 4nC is moved from infinity to a point 15cm away from a charge of 8nC. How much potential energy is needed to move a 7nC charge from infinity to that point?
A 20 kg plant hangs on a rope. the rope is not distributed evenly. Segment AB is at 30degrees- Segment BC is at 60degrees. What is the tension in Segment AB? What is the tension in segment BC?
Calculate the net torque about the axle of the wheel shown in Fig. 8-39. Assume that a friction torque of 0.46 m·N opposes the motion and that F = 24.
A charge of +10 mC is at (+3 m, 0m) on the x-axis and a charge of +10 mC is at (-3 m,0 m). Determine the work required to assemble this charge distribution.
A 1kg ball released from horizontal attatched to a 2.5m string collides ellastically with a 2 kg block at rest. what is the speed of the block after the collision?
A 300 g block on a 58.0 cm-long string swings in a circle on a horizontal, frictionless table at 95.0 rpm. What is the speed of the block?
A charge of +18 mC is on the y axis at y=+3.0 m. A charge of -12 mC is at the origin. Find the direction of the force relative to the -x axis.