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A 45.0-kg person steps on a scale in an elevator. The scale reads460 N. What is the magnitude of the acceleration of the elevator?
two stones are released from rest at a certain height one after the other.a. will the difference between their speeds
0.025m3 of oxygen at 150 kpa in a piston cylinder device expands polytropically with n 1.2 to a volume of 0.25m3. what
A 45.0-g object connected to a spring with a force constant of 30.0 N/m oscillates with an amplitude of 4.00 cm on a frictionless, horizontal surface. calculate the total energy of the system
question you and your friend peter are putting new shingles on a roof pitched at 25circ . youre sitting on the very top
A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. What is the total energy of the system
If the orientation of the spacecraft is to be changed by 30.0°, for what time interval must the gyroscope be operated.
The average coefficient of volume expansion for carbon tetrachloride is 5.81 10-4 (°C)?1. how much will spill over when the temperature rises to 29.0°C
a what is the electric potential energy in joules of two electrons separated by 1.98 nm? b what would be it be if the
A vector has an x component of -23.0 units and a y component of 50.5 units. Find the magnitude and direction of the vector
A 13g rifle bullet traveling 150m/s buries itself in a 3.7 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Resolve the horizontal component of the pendulum's maximum displacement.
You've decided to protect your house by placing a 5.8-m -tall iron lightning rod next to the house. What minimum diameter must the rod have
Police investigators, examining the scene of an accident involving two cars, which nearly came to a stop before colliding, Estimate the initial speed of that car assuming a level road
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