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An airplane is flying with a velocity of 80.0 at an angle of 19.0 above the horizontal. When the plane is a distance 110 directly above a dog that is standing on level ground, a suitcase drops out
To keep the equation dimensionally homogeneous, what is the unit of 0.00256?
A white billiard ball with mass mw = 1.57 kg is moving directly to the right with a speed of v = 3.36 m/s and collides elastically with a black billiard ball with the same mass mb = 1.57 kg that is
It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air resistance is negligible, and the collision is elastic. The mass of the ball is 1.6kg and the mass
An open organ pipe and an organ pipe that is closed at one end both have lengths of 0.75 m at 22°C. What is the fundamental frequency of each pipe?
An astronaut on a small planet wishes to measure the local value of g by timing pulses traveling down a wire which has a large object suspended from it.
A small crack occurs at the base of a 15m high dam. The effective crack area through which the water escapes is 1.3 X 10^-3 m^2. Ignoring viscous losses what is the speed of water flowing through t
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 4.55 m/s at 52.0° below the horizontal. Calculate the speed of her shadow on the level ground.
A proton moves with a speed of 2.0 106 m/s horizontally, at a right angle to a magnetic field. What magnetic field strength is required to just balance the weight of the proton and keep it moving ho
A golf ball is struck with a five iron on level ground. It lands 91.4 away 4.20 later. What was (a) the direction and (b) the magnitude of the initial velocity?
How much work is done when a force of 490.0 N is exerted while pushing a crate across a level floor for a distance of 1.3 m?
If the coefficient of friction between road and tires on a rainy day is 0.100, what is the minimum distance in which the car will stop? What is the stopping distance when the surface is dry and the c
A loudspeaker at a rock concert generates 10-2 W/m2 at 22 m at a frequency of 1 kHz. Assume that the speaker spreads its energy uniformly in all directions. What is the intensity level at 22 m in dB
If you weigh 675 N on the earth, what would you weigh on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0 ?
The ends of a massless rope are tied to a ceiling. Two identical 2.55 kg masses are now hung along the length of the rope, dividing the rope into three segments of equal length.
Explain in detail why the dust clings to the wheels and be sure to describe forces by name and mention charging by induction and conducting or rubbing if it is appropriate, also explain what atoms o
A child slides down a slide with a 34o incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic frictio
Assuming a constant upward slope of 32, calculate the horizontal and vertical components of the acceleration of a truck that slowed from 140 to rest in 7.3.
An electric water heater holds 165L. If electricity costs 0.18 per , how much does it cost to raise the water temperature from 10 to 60?
How many time constants must elapse for an initially uncharged capacitor in an RC series circuit to be charged to 94.0% of its equilibrium charge?
A space station in the form of a large wheel, 72.1 m in diameter, rotates to provide an "artificial gravity" of 6.5 m/s2 for people located at the outer rim. What is the frequency of the rotational
A loudspeaker of mass 21.0 {rm kg} is suspended a distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.90 {rm m}.
The four tires of an automobile are inflated to a gauge pressure of 200 kPa. Each tire has an area of 0.024 0 m2 in contact with the ground. Determine the weight of the automobile.
A proton with speed v = 3.00 x 105 m/s orbits just outside a charged sphere of radius r = 1.00 cm. What is the charge on the sphere?
One more bulb is added to the circuit and the location of the switch is changed. The new circuit is shown in the figure. (Part B figure) Bulbs A, B, C, and D are identical and the switch is an ideal