Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Two circus clowns (each having a mass of 50kg) swing on two flying trapezes (negligable mass, length 25m) towards each other. At the peak of the swing, one grabs the other, and the two swing back to
A boeing 737 airliner has a mass of 20,000kg and the total area of both wings (top or bottom) is 100m^2. What must be the pressure difference between the top and bottom surface of each wing when the
Using the result of part (c) and the torque equilibrium equation, with torques computed around the second pivot point, find the woman's position when the beam is about to tip.
A string is stretched and fixed at both ends, 200cm apart. If the density of the string is .015 g/cm, and its tension os 600 N, what is the wavelength (in cm) of the first harmonic?
Water pressurized to 3 * 10^5 pa is flowing at 5 m/sec in a horizontal pipe which contracts to 1/3 its former area. What is the pressure and velocity of the water after the contraction?
A hydraulic lift raises a 2000 kg automobile when a 500 Nt force is applied to the smaller piston. If the smaller piston has an area of 10 cm^2, what is the cross-sectional area of the larger piston
A supertaker filled with oil has a total mass of 6 * 10^8 kg. If the dimensions of the ship are those of a rectangular box 300 meters long, 80 meters wide, and 40 meters high, determine how far the
A solid metal sphere of radius a = 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b = 3.50 cm and outer radius c = 4.00 cm. The inner sphere has a net charge of Q1 = 4.7
A U.S. $20 gold piece has a mass of 33.44 grams and displaces 1.935 cm^3 of water. If the coin is known to consist of only gold (Pau = 19.3 g/cm^3) and copper ( Pcu = 8.9 g/cm^3), what is the percen
Determine the time it takes for the electron to leave the "field-filled" region, noting that its path is a semicircle.
A 2.00 -long, 480 rope pulls a 6.00 block of ice across a horizontal, frictionless surface. The block accelerates at 2.00 . How much force pulls forward on (a) the ice, (b) the rope?
A 7.80-g bullet moving at 630 m/s penetrates a tree trunk to a depth of 6.00 cm. a) Use work and energy considerations to find the average frictional force that stops the bullet. b) Assuming the fri
An electron moves in a circular path perpendicular to a constant magnetic field of magnitude 1.00 mT. The angular momentum of the electron about the center of the circle is 4.00 kg m2/s. Determine (
An electron moves in a circular path perpendicular to a constant magnetic field of magnitude 1.00 mT. The angular momentum of the electron about the center of the circle is 4.00 m kg m2/s. Determine
The French TGV train and Japanese "bullet train" reach speeds of up to 180 mph with wheels moving on tracks about 1.5 m apart. At top speed moving perpendicular to the earth's magnetic field, what p
A uniform electric field with a magnitude of 680 kV/m permeates a certain volume of space with a total energy of 3.40 μJ. Explain your reasoning for the key steps when you determine the magnetic
You find yourself on the surface of this asteroid and throw a baseball at a speed of 24 m/s. If the baseball is to travel around the asteroid in a circular orbit, what is the largest radius asteroid
Two identical conducting small spheres are placed with their centers 0.395 m apart. One is given a charge of -12.0 nC and the other a charge of -15.0 nC. (a) Find the electric force exerted by one s
In the Bohr theory of the hydrogen atom, an electron moves in a circular orbit about a proton, assume the radius of the orbit is 5.29 x 10-11 m. (a) Find the magnitude of the electric force exerted
The orbital speeds of the planets are determined to be 42.1 km/s and 56.4 km/s. The slower planet's orbital period is 7.93 years. (a) What is the mass of the star? (b) What is the orbital period of
A simple single lens camera (biconvex lens) is used to photograph a man 1.5 m tall who is standing 5.0 m from the camera. if the mans image fills the length of a frame of film (35mm) what is the foc
Two speakers are driven by the same sound wave of wavelength .50m. if the distances from a point to the speakers differ by 1.0 m, will the waves interface constructively or destructively? Justify yo
A projectile is launched with an initial velocity of 80 m/s at an angle of 30º above the horizontal. Neglecting air resistance, what is the horizontal component of the projectile's acceleration
A lens with an index of refraction of 1.35 is to be coated with a material (n=1.2) that will make the lens nonreflecting for fed light (wavelength = 650nm) normally incident on the lens. What is the
An electron moves with constant velocity through a region of space that is free of magnetic fields. Can one conclude that the electric field is zero in this region?