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A space station, in the form of a wheel 103 m in diameter, rotates to provide an "artificial gravity" of 3.60 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of t
A uniform electric field has a magnitude of 130 N/C. This field is parallel to the ground and points 37o north of east. What is the electric flux through the wall?
Rank each of the following cases according to the change in kinetic energy of the particle over this part of its flight, from the largest increase to the largest decrease in kinetic energy. (Use onl
A 39.0-kg child swings in a swing supported by two chains, each 2.98m long. The tension in each chain at the lowest point is 440 N. (a) Find the child's speed at the lowest point. (b) Find the forc
A pion is an unstable particle that has an average lifetime of 2.55 × 10-8 s. An "average" pion is traveling at 0.310c relative to Earth. How far does it travel in its lifetime, relative to Eart
An insulating rod having linear charge density λ = 36.0 µC/m and linear mass density μ = 0.100 kg/m is released from rest in a uniform electric field E = 55 V/m directed perpendicula
Everything on the Earth's surface is rotating in a circle as the Earth rotates on its axis. Does this mean that there is a centripetal force on everything on the surface? Explain.
A current of 15 A flows through an electric heater operating on 120 V. What is the heater's resistance? Compute the power consumption of the electric heater in kW? How much energy does it use in 60
An electron starts from rest 74.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is very far away?
A 58.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.26 102 m/s from the top of a cliff 150 m. What is the initial total mechanical energy of the pro
A 1,720 Hz pure tone is played on a stereo in an open field. A person stands at a point that is 4 m from one of the speakers and 4.4 m from the other. Does the person hear the tone? Explain.
A child slides down a slide with a 31° incline, and at the bottom her speed is precisely one-third what it would have been if the slide had been frictionless. Calculate the coefficient of kinet
A throttle setting to give a constant speed of 2.38 m/s relative to the water. What is the magnitude of the speed of the boat relative to a stationary shore observer?
The magnitude of the deceleration is 4.70 times the magnitude of the acceleration. Find the lengths of the (a) acceleration and (b) deceleration phases of the trip.
A jet airplane has an instantaneous acceleration of 2.05 m/s2 at an angle of 18.8° above the horizontal. Compute the horizontal and vertical components of force exerted on a 52.0 kg passenger b
What is the velocity of the wind that is affecting the plane? Let north be positive. Answer in units of km/h.
A converging lens (f = 10.0 cm) is held 8.20 cm in front of a newspaper, the print size of which has a height of 1.90 mm. Find (a) the image distance (in cm) and (b) the height (in mm) of the magni
A 25.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 75.0 N and is directed at an angle of 30.0° above the horizontal. Determi
The drawing shows an end-view of two wires. They are long, straight, and perpendicular to the plane of the paper. Their cross sections lie at the corners of a 0.7-m square. The current in wire 1 is
A 31.0 kg block at rest on a horizontal frictionless table is connected to the wall via a spring with a spring constant k=26.0 N/m. A 3.60E-2 kg bullet travelling with a speed of 480 m/s embeds itse
Use this mass formula to determine the mass of Jupiter using data from its moon Sinope: period of orbit is 2.075 years, average orbital distance is 0.158 astronomical units.
A worker stands still on a roof sloped at an angle of 30° above the horizontal. He is prevented from slipping by a static frictional force of 320N. Find the mass of the worker?
Suppose that an ion source in a mass spectrometer produces doubly ionized gold ions (Au2+), each with a mass of 3.27 10-25 kg. The ions are accelerated from rest through a potential difference of 1
A length of 0.547 m in order to produce a magnetic field of magnitude 0.0002 T at the center of the solenoid? The permeability of free space is 4π × 10-7 T · m/A .
A plastic sphere floats in water with 30% of its volume submerged. This same sphere floats in glycerin with 23.9% of its volume submerged.