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A 500 g ball is attached to a 1.00 m long string, as shown in the figure to the right. The ball is allowed to move in a horizontal circle of radius 75.0 cm. The string traces out the surface of a cone. What is the tension in the string?
Three boxes rest side-by-side on a smooth, horizontal floor. Their masses are 5.0 kg, 3.0 kg, and 2.0 kg, with the 3.0-kg mass in the center. A force of 50 N pushes on the 5.0-kg mass, which pushes against the other two masses. What is the contact..
Two and one-half kg of ice at temperature T' = 0ºC is melted into water at the same temperature by placing it in contact with a reservoir at temperature TR = 20.0ºC. What is the change in the entropy of the universe
Determine which of thefourmaterials is magnetic and describe how you made this determination. Determine whether a non-magnetic conductor can be used to ‘block' or ‘shield' a magnetic field and describe how you made this determination.
Two automobile batteries are connected in parallel to power a wheelchair. Find the current provided to the motor
90 kW of power is delivered to the other side of a city by apair of power lines with the voltage difference of 13942.8 V. What is the voltage change along each line
An ice chest at a beach party contains 11cans of soda at 6°C. Each can of soda has a mass of 0.34 kg and a specific heat capacity of 3900 J/(kg·°C).Someone adds a 6.3 kg watermelon at25°C to the chest. The specific heat capacity of watermelon is near..
question1a 32 percent efficient electric power plant generates 700mw of electric power and discharges waste heat into
A hydrogen atom in its ground state is excited to the n = 5 level. It then makes a transition directly to the n = 2 level before returning to the ground state. What are the wavelengths of the emitted photons
A certain dog whistle operates at 22.7 kHz, while another (brand X) operates at an unknown frequency. estimate the operating frequency of brand X
At an outdoor market, a bunch of bananas is set into oscillatory motion with amplitude of 20 centimeter on a spring with a force constant of 16 N/m. Evaluate the weight of the bananas in Newton's
An object of mass 279.948159 g executes SHM with an amplitude of 15.523567 cm and a period 26.969187 s. Find the force acting on the object at time 1.403065 s
Two blocks are connected by a rope that stretches over a pulley. While the rope is massless,the pulley is not. The blocks have masses of m1=3 kg, m2=2kg, and the pulley is a solid disk with a mass of mp=1. 5 kg and radius of 10 cm. Block m2 r..
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