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You are investigating an accident where a 1500 kg car that was parked without its emergency brake on rolled down a hill with a slope of 8 degrees a distance of 150 m and hit a parked van. How fast was the car moving when it hit the van?
25% of a radioactive material stays active after 4 hours. What is the half-life of this radioactive material
A 14.4 cm long tendon was found to stretch 3.79 mm by a force of 11.1 N. Calculate the Young's modulus of this tendon
A beam of light of wavelength 569 nm traveling in air is incident on a slab of transparent material. Find the index of refraction of the material
A 2.0 mm diameter plastic bead is charged to - 1.0nC. A proton is fired at the bead from far away with a speed of 1.0x10^6 m/s, What is the impact speed
An electric motor can accelerate a Ferris wheel of moment of inertia I = 19500 kg·m2 from rest to 9.4 rev/min in 12.0 s, Determine the torque generated by the motor to bring the wheel to 9.4 rev/min
The components of a simplest clamping circuit.
A movie camera with a (single) lens of focal length 85 mm takes a picture of a person standing 35 m away. what is the height of the image in millimeters on the film
An L-R-C series circuit has 97.5%u03A9 , and the amplitude of the voltage across the resistor is 30.0VV . What is the average power delivered by the source
An object with mass 2.5kg is executing simple harmonic motion, attached to a spring with spring constant 330N/m. Calculate the maximum speed attained by the object
A 69.00 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.20. What would be magnitude of the acceleration.
A student throws a 100g snowball at 7.5m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall
In a science museum, a 130kg brass pendulum bob swings at the end of a 13.7m -long wire. how many oscillations will the pendulum have completed
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