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The first person is initially moving forward with a speed of 2.10 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Disregar
How do I determine the magnitude and direction of the average acceleration of the baseball while it is in contact with the bat?
A 50.0g sample of water at 70.0 degrees C is mixed with 90.0g of water at 25.0 degrees C. What is the final temperature of the mixture?
The permittivity of vacuum is 8.85 × 10-12 C2/N · m2. What plate radius is required if the stored charge is -1.03 μC?
A 0.410 kg pendulum bob passes through the lowest part of its path at a speed of 3.13 m/s. What is the tension in the pendulum cable at this point if the pendulum is 76.2 cm long?
You are riding your bicycle directly away from a stationary source of sound and hear a frequency that is 1.2% lower than the emitted frequency. The speed of sound at the temperature that day is 349
An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocit
A 2.26 μF capacitor and a 6.68 μF capacitor are connected in series across a 20.0 V battery. What voltage would be required to charge a parallel combination of the same two capacitors to the
Two pieces of steel are held together with six bolts. Calculate the diameter of the bolts needed to support the load.
Which of the following are not examples of constructive feedback?
An artillery shell is fired horizontally from the top of a cliff 78.0 m high. Find the components of its velocity at the instant it strikes the ground.
You are a deep sea diver and are carrying out pressure test son your air tanks, which is required by inspection rules. A gas cylinder is filled with a gas at a temperature of 300 K and pressure 200
In a system with two moving objects, when a collision occurs between the objects:
Find the magnitude of the force needed to accelerate a 160g mass with a = -0.215m/s2 i +0.570m/s2 j.
What is the speed of the waves on the string? (b) If the tension in the string is 1.20 N, what is the mass of 50 cm of the string?
A thin soap film (n = 1.33) has a uniform thickness. When white light strikes the film at normal incidence, blue light (b = 440 nm) is constructively reflected. At what angle of incidence will gree
The resistance of the loop is 0.10 ohms and its width (d) is 4.6 cm. What are the direction and the magnitude of the current in the loop.
A bullet of mass 13 g is fired with an initial speed of 283 m/s into a wooden block that is initially at rest. The bullet becomes lodged in the block, and the two slide together on the floor for a
The innermost orbital radius of the hydrogen atom for n=1 is defined by the equation. Calculate the radii of the second, third, and fourth allowable energy levels in the hydrogen atom.
Three uniform thin rods, each of length L = 19 cm, form an inverted U. The vertical rods each have a mass of 12 g; the horizontal rod has a mass of 44 g. What are (a) the x coordinate and (b) the y
The other canoe is at its lowest point. Both canoes are always within a single cycle of the waves. Determine the speed of the waves.
An engine that provides an upward force of 8.9 * 10^5 N. It reaches a max of 860 m/s Force diagram? How long must the engine burn in order to reach this speed?
A butterfly flies from the top of a tree in the center of a garden to rest on top of a red flower at the garden's edge. The tree is 9.0 m taller than the flower, and the garden is 17 m wide. Determ
An astronaut is taking a space walk near the shuttle when her safety tether breaks. What should the astronaut do to get back to the shuttle?
Suppose an electric field with a magnitude of 2.8 x 104 N/C at a certain location points due south. If a charge of -4.0 x 10-6 C is brought to the location, what is the electrostatic force that act