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A child is twirling a 0.0215-kg ball on a string in a horizontal circle whose radius is 0.143 m. The ball travels once around the circle in 0.586 s.
(a) Determine the centripetal force acting on the ball.
(b) If the speed is doubled, by what factor does the centripetal force increase?
You are walking toward a plane mirror at a speed of 3 m/s. How fast is your image moving relative to you
find the period of this oscillation.
Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next. What was your original speed
A transformer has 350 primary turns and 1390 secondary turns. The input voltage is 120?V and the output current is 18.0A, find the output voltage and input current
A 180-turn circular coil has diameter 5.40 cm and resistance 1.05 \Omega. Find the induced current in the coil
A 7.4- g piece of silver undergoes isochoric heating, By how many joules does the internal energy change
A rectangular fish tank measures 30 cm by 65 cm by 40 cm high. What is the total force of the water on the bottom
A Styrofoam cup holding 155 g of hot water at 97°C cools to room temperature, 23.0°C. What is the change in entropy of the room
A laser emits light at wavelength ? = 637 nm in a beam of diameter 2.9 mm and at an energy-emission rate of 5.4 mW. At what rate per unit area does the detector absorb photons
A wire coil is oriented so that its plane is perpendicular to a magnetic field of 0.58 T initially pointing to the left. What is the average induced emf, if the diameter of the coil is 49 cm
The property of objects to resist changes in motion is called inertia. If an object has a mass of m = 41.85 kg, how do we quantify the inertia this object
Two particles are fixed to an x axis: particle 1 of charge -4.18 × 10-7 C is at the origin and particle 2 of charge +4.18 × 10-7 C is at x2 = 13.9 cm. what is the magnitude of the net electric field
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