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1.An ideal massless spring is hanging vertically. When a 0.54-kg mass is attached to the spring, the spring stretches by 3.7 cm before reaching a new equilibrium. Then the mass is displaced by 1.9 cm from the new equlibrium. What is the frequency of the resulting oscillation?
2. An ideal massless spring is hanging vertically. When an unknown mass is attached to the spring, the spring stretches by 4.8 cm before reaching a new equilibrium. Then the mass is displaced by 1.9 cm from the new equlibrium. What is the frequency of the resulting oscillation?
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. What angle does the velocity vector make with the horizontal
A conducting bar rests on two parallel horizontal rails 50 cm apart forming a square area. The resistance of the bar and the rails is assumed to be constant and equal to 0.05 ??. What is the maximum value of the force acting on the bar during that ..
An airplane is making a turn with a given radius in a circle. The lift force (given) is exerted perpendicular to the wings. What is the angle that the wings make with the horizontal
Water is flowing in a pipe as depicted in the figure. As shown, p = 107 kPa, d = 4.61 cm, d' = 3.38 cm, v = 4.50 m/s, and h = 1.31 m. What pressure is indicated on the upper pressure gauge
A spherical rain drop carries a charge of 2.70E-8 C and has a potential of 5.76E+4 V at the surface, Find the surface area of the drop
Three identical masses of 430 each are placed on the x axis. One mass is at = -14.0, one is at the origin, and one is at = 37.0.
A 0.250-kilogram cup at 15 °C is filled with 0.100 kg of boiling coffee. The cup and the coffee come to thermal equilibrium at 75 °C. what is the specific heat of the cup material
A slab of a thermal insulator with a cross-sectional area of 120cm2 is 3.00cm thick
A 6 cm diameter conducting loop with resistance of 10m\Omega is placed perpindicular to a variable magnetic field B. Determine the current and its direction induced in the loop
A pot containing 1.01 liter of water, initially at 19°C, is placed on a 1051 W electric heating element. How much heat is necessary to boil all the water away
What range is appropriate
The velocity of an airplane with respect to the ground is 2.00 x 102 m/s at an angle of 30.0 degrees NORTH of EAST. What is the velocity of the air with respect to the ground
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