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Mass m ? 20kg is released from rest from the top of a frictionless ramp of height h = 1.8 m and length d = 2.4 m. At the bottom of the ramp, the mass slides on a horizontal, frictionless surface until it compresses a spring of spring constant k = 10 N/m.
What is the speed of the mass at the bottom of the ramp?
How far does the spring compress?
How much work does gravity do on the mass when it slides down the ramp?
How much work does the spring do on the mass during the compression?
What is the total work done on the mass during the interval from the moment it is released to the moment the spring is fully compressed?
A circular disk with the rectangular hole has a radius of 0.540 m and mass of 0.440 kg. It is suspended by a point on its perimeter. The moment of inertia about this point is I_p = 1.7×10-1 kgm2.
You have a 10.9 m straight wire carrying a 9.89 A current. What is the magnitude of the force on the wire when it is in a 0.83 T magnetic field perpendicular to the wire
A 600 turn solenoid, 25 cm long, has a diameter of 2.8 cm. A 10 turn coil is wound tightly around the center of the solenoid. If the current in the solenoid increases uniformly from 0 to 5.0 A in 0.48 s, what would be the induced emf magnitude in the..
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
A particle with a mass of 6.64*10^-27kg and a charge of 3.20*10^-19Cis accelerated from rest through a potential difference of 2.45*10^6V. calculate the radius of the path inside the magnetic field
An electron has a de Broglie wavelength ? = 7.0×10?10m, What voltage was needed to accelerate it to this speed and What is its speed
Police determine skid marks 83 m long on the highway showing where the car made an emergency stop. Assume that the acceleration was -10 m/s2 (about the highest for dry pavement), how fast was the car going.
A series RCL circuit driven at angular frequency w = 780 rad/s has a capacitive reactance XC = 920 ohms, What is the average power consumption of the circuit
An object is 23.2 cm from the surface of a refiective spherical Christmas-tree ornament 5.11 cm in radius. What is the apparent position of the image
Suppose a 65 kg person stands at the edge of a 6.5 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1850 kg m2. Calculate the angular velocity of the turntable
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. (a) What is the total distance traveled by the whale? km (b) What are the magnitude and direction..
two plates of radius R are separated by a distance 2h.the top plate rotates with velocity w. find the velocity as a function of radius r and and height z
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