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A rolling wheel of radius r has translational velocity v as well as angular velocity w. Here you will relate translational velocity to angular velocity. Since the circumference of a circle of radius
A brick is thrown vertically upward with an initial speed of 3.10 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground?
Two large, parallel, conducting plates are 17 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 4.6 x 10-15 N acts on an electron pl
The spring of the scale has a force constant k = 332 n/m. It is observed that the maximum speed of the banans is 1.56m/s. What is the mass of the banana bunch in units of kg?
A charge of -5.50 nC is uniformly distributed on a thin square sheet of nonconducting material of edge length 21.9 cm. What is the magnitude of the electric field next to the sheet and proximate to th
A train 608 m long is moving on a straight track with a speed of 79.2 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 14.5 km/h. Assum
A 87.0 kg person steps into a car of mass 2300.0 kg, causing it to sink 2.4 cm. Assuming no damping, with what frequency will the car and passenger vibrate on the springs?
Using the data shown in the figure, find (a) the magnitude of the tension in the wire and the magnitudes of the (b) horizontal and (c) vertical components of the force that the wall exerts on the le
A hockey puck is sliding along the ice with nearly constant momentum ‹ 3, 0, 3 › kg · m/s when it is suddenly struck by a hockey stick with a force ‹ 0, 0, 1650 ›
A beam of light enters the oil from above the glass with an incident angle of 57.0°. What is the refraction angle of the light leaving the oil-water interface?
In coming to a stop, a car leaves skid marks 87.0 m long on the highway. Assuming a deceleration of 6.90 m/s2, estimate the speed of the car just before braking.
what are the angles between the cable supporting the load and the beam and between the cable supporting the beam and the beam?
A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center. The linear speed of a passenger on the rim is constant and equal to 7.81 m/s. What is the magnitude of the pa
Ships A and B leave port together. For the next two hours, ship A travels at 26 mph in a direction 40 degree west of north. What is the distance between the two ships two hours after they depart? = 59
Two devices with capacitances 25µF and 3.2µF are each charged with separate 148 V power supplies. Calculate the total energy stored in the two capacitors.
What are the strength and direction of an electric field that will balance the weight of a 1.1 g plastic sphere that has been charged to -3.6 nC?
If a sound wave traveling in air approaches a plane water surface at an angle of incidence of 3.4°, what is the angle of refraction?
A 95- water skier floating in a lake is pulled from rest to a speed of 13 m/s in a distance of 27 m. What is the net force exerted on the skier, assuming his acceleration is constant?
The electric field just above the surface of Earth has been measured to typically be 158 N/C pointing downward What is the total charge on Earth's surface implied by this measurement?
A stunt man whose mass is 70 kg swings from the end of a 4.0 m long rope along the arc of a vertical circle. Assuming that he starts from rest when the rope is horizontal, find the tensions in the r
A car traveling east at 40 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25 m/s in 3.5 s. What is the magnitude and direction of the car's acceleration ?
A baseball is seen to pass upward by a window 27 above the street with a vertical speed of 11. What is the balls initial speed?
The tension is such that the block just comes to rest when it reaches the bottom of the incline. (The person's force is nonconservative!) What is this constant tension?
An experiment that can be used to measure the velocity of a bullet is to have two cardboard disks attached to a rotating shaft some distance apart and to measure the angular separation of the holes
A load is suspended by cable fro a beam supported by another cable. The angle between the beam and the horizontal is 66 degrees and the angle between supporting cable and the horizontal is 39 degree