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Question1
Calculate approximately the average power of a water wave when it hits chest of an adult standing in the water at the seashore. Suppose that the amplitude of the wave is 0.60m, the wavelength is 2.6m, and the period is 3.0s. Assume that the area of the chest is 0.18m2.
Question2
Two identical point charges of q=+1.75 x10-8 C are unconnected by a distance of 1.00 m. What is least amount of work required by an external force to go them closer together so that they are only 0.25 m apart?
Question3
A conductor is created into a loop that encloses an area of 1.0 m2. The loop is oriented at a 30.0° angle with xy-plane. A varying magnetic field is oriented parallel to the z-axis. If the utmost emf induced in the loop is 19.0 V, what is most rates at which the magnetic field strength is changing?
Calculate the absorbed dose in Gy to the skin of a person which receives 1500 ergs/gm of beta radiation from a cloud of radioactive krypton-85 gas.
An AC source operating at 63 Hz with a maximum voltage of 170 V is connected in series with a resistor (R = 1.2 k) and an inductor (L = 3.6 H), What is the maximum value of the current in the circuit
A 12.7??C particle with a mass of 2.90×10?5kg moves perpendicular to a 1.01T magnetic field in a circular path of radius 23.0m, How fast is the particle moving
Two waves with identical frequency but different amplitudes A1 = 6.0 cm and A2 = 3.0 cm, What is its amplitude if they interfere destructively
In a common but dangerous prank, a chair is pulled away as a person is moving downward to sit on it, causing the victim to land hard on the floor. What is the magnitude of the impulse acting on the victim from the floor during the collision
X rays with initial wavelength 6.60×10?2nmundergo Compton scattering. What is the largest wavelength found in the scattered x rays
n = 2.90 mol of Hydrogen gas is initially at T = 370 K temperature and pi = 2.27×105 Pa pressure. What would be the temperature of the gas, if the gas was allowed to adiabatically expand back to its original pressure
They stick together after the collision and are going 10 m/s after the collision. If they skid for 6seconds before stopping, how far did they skid?
Two point charges, q1= 2.40 nC and q2= -6.50 nC, are 0.100 m apart. Point A is midway between them; point B is 0.080 m from q1 and 0.060 m from q2 (see the attachment). Take the electric potential to be zero at infinity.
A yo-yo has a rotational inertia of 970 g·cm2 and a mass of 104 g. Its axle radius is 3.15 mm, What is the magnitude of its linear acceleration
If a metric ton is 1.000 x10^e3 kg, how many 74 kg people can safely occupy an elevator that can hold a maximum mass of accurately 1 metric ton.
Each time you remove a bulb you will calculate the new total resistance and the new current.
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