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Once you get on the walkway, you immediately turn around and start walking in the opposite direction with a speed of 1.5 m/s relative to the walkway?
Earthquakes are essentially sound waves travelling through the earth. They are called seismic waves. Because the earth is solid, it can support both longitudinal and transverse sismic waves, which t
A Venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at speed v2 through a horizontal section of pipe whose cross-sectional area is A2 = 0.05
Determine the magnitude of the magnetic field in the region through which the current passes.
A block is hung on a spring, and the frequency f of the oscillation of the system is measured. The block, a secondidentical block, and the spring are carried in the Space Shuttle to space. The two blo
How long after the beginning of the power failure would it have taken the flywheel to stop if the power had not come back on?
The following data were obtained for a voltage measurement, in mV, on a noisy
If the airplane somehow continues to fly as if nothing happend, where is the engine relative to the airplane at the moment the engine hits the ground?
The screen is located 10.3 cm from the center of the coils and is 54.2 cm wide. When the field is turned off, the electron beam hits the center of the screen. Ignoring relativistic corrections, what
A parallel -plate capacitor has circular plates of 8.2cm radius and 1.3cm separation. A. calculate the capacitance
An outfielder throws a 0.150 kg baseball at a speed of 50.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?
24.0% of the weight of the car. What is the acceleration of the car? How many meters does the car travel before stopping under these conditions?
A bicycle has wheels with a 30-centimeter radius. If smaller wheels with a 25-centimeter radius are installed, What is the change in linear speed of the bicycle if the wheels rotate at 1 revolution
Which of the following is the best example of kinetic energy?
A hot-air balloon is descending at a rate of 2.4when a passenger drops a camera. If the camera is 48 above the ground when it is dropped, how long does it take for the camera to reach the ground?
One of the principles of great importance in electric circuit design is the maximum power transfer theorem between a power supply and a load. In an electric circuit, Rh is the regulating resistor an
A light rope passes over a light, frictionless pulley. One end is fastened to a bunch of bananas of mass M, and a monkey of mass M clings to the other end.
A distance of 1.27 as it falls to the ground, how much time is required for the torso to come to rest once it contacts the ground?
A petite young woman distributes her 500 N weight equally over the heels of her high-heeled shoes. Each heel has an area of 0.750 cm2. a) What is the pressure exerted on the floor by each heel? b)
V=12 volts and R=100 Ohms. At a certain setting of the rheostat the ammeter reads I = 35 micro amps. Calculate resistance of the rheostat Rh at that setting and find Vh and Vr. What's the sum of Vh
A spring is hung from the ceiling. Attaching a 500 g physics book to the spring causes it to stretch 20 cm in order to come to equilibrium. What is the spring constant?
How far is the crate from the aircraft when the crate hits the ground, assuming that the plane continues to fly with the same velocity?
A chemist mixes 500 g of lead at 500°C with 1,200 g of water at 20°C. She then mixes 500 g of copper at 500°C with 1,200 g of water at 20°C. The specific heat capacity of lead is 0.1
The body makes an angle of 75 degrees with respect to the horizantal surface of water. Determine her velocity, both magnitude and direction.
Two lenses of focal length +25cm and -10cm (convex and concave) respectively are placed in contact. What is the power of the combination?