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A stone is thrown straight up with an initial speed of 15.0 m/s. Then, a second stone is thrown straight up 1.00 s after the first one (from the same position). Showing your work and reasoning, determine with what speed one must throw the second stone if it is to hit the first one at a height of 11.0 m from the launching point.
A ball of mass 250 gram is released from rest at a height of 2.00 meter above the floor and it rebounds straight up to a height of 0.750 meter. Determine what was the direction of this force
The current density from the axis in the wire of radius R is given by J = cr^0.5 (r is powered to one-half), Draw the current density as a function of r graph
A omega ?? (mass = 1672 MeV/c2) at rest decays into a kaon K? (mass = 493.7 MeV/c2) and a lambda ?0 (mass = 1115.7 MeV/c2): ?? ? K? + ?0, What is the total kinetic energy of the kaon and lambda
ball A moving to the east collide with ball B and C with are at rest. after collision ball B went Northe with speed of 3 m/s and ball C went 30 digree south-east with speed of 5 m/s. Find kenetic energy generated during explosion
A 930•kg car strikes a huge spring at a speed of 18•m/s (Fig. 11-50), compressing it 6.0 m. How long does the spring take to stop the car
The market portfolio has a standard deviation of 20 percent, and the covariance between the returns on the market and those on a stock Z is 0.08. What is the standard deviation of a fully diversified portfolio of such stocks? What is the average beta..
A bicyclist with mass 61 kg wants to make a turn with a radius of 23.5 m on a horizontal surface. If she is riding at a speed of 12.45 m/s, at what angle from the vertical will she need to lean to make the desired turned?
a bathysphere used for deep-sea exploration has a radius of 1.50 m and a mass of 1.19 x 104 kg. in order to dive this
A semiconductor (GaAs) laser emitting at 800 nm has a 400 micrometer cavity length with a refractive index n=3.6. If the gaing exceeds the total loss αt throughout the range 750 nm
Diffraction studies involving X-rays, electrons or neutrons give information about the crystallographic properties of solids. Compare these three techniques with reference to particle energies and types of information that can be obtained. Which ..
A spring with a spring constant 23 N/m is suspended vertically. (Assume the mass of the spring is negligible), How much does the spring stretch (in cm) when 236 g is added? The spring is then set into vertical oscillation from its equilibrium positio..
Wind gusts create ripples on the ocean that have a wavelength of 5.00 cm and propagate at 2.00 m/s. What is their frequency?
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