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A woman stands on a scale in a moving elevator. Her massis 60.0 kg and the combined mass of the elevator and scale is anadditional 815 kg. Starting from rest, the elevatoraccelerates upward. During the acceleration, there is tensionof 9410 N in the hoisting cable. What does the scale readduring the acceleration?
A bar of length 2 cm slides along metal rails at a speed of 1 cm/s. The bar and rails are in a magnectic field of 2 T, pointing out of the page. what is the induced emf in the bar and rails
A volleyball is spiked so that its incoming velocity of +4.79 m/s is changed to an outgoing velocity of -12.0 m/s. find the magnitude of the impulse that the player applies to the ball
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
An ordinary drinking glass is filled to the brim with water (267.5 mL) at 3.0° C and placed on the sunny pool deck for a swimmer to enjoy. how much water will have spilled over the top of the glass
What is formula for the acceleration a of the cart in terms of the tension T, and its mass M? make use of the two equations you found above to eliminate T to give the acceleration of the cart in terms of M, m and g. Compute the numerical value for..
A 0.015 Kg record with a radius of 15 cm rotates with an angular speed of 33(1/3) rpm. what is the fly's angular momentum
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
Estimate the phase difference between the sounds received by your ears when you are facing 90° away from the direction of the source
A 5.5 g dart is fired into a block of wood with a mass of 22.6 g.The wood block is initially at rest on a 1.5 m tall post. After thecollision, the wood block and dart land 2.5 m. from the base of thepost. Find the initial speed of the dart.
A 24.0 kg gold bar at 27.0°C is placed in a large, insulated 0.800 kg glass container at 15.0°C with 2.00 kg of water at 25.0°C. Calculate the final equilibrium temperature
At one instant a bicyclist is 49.0 m due east of a park's flagpole, going due south with a speed of 14m/s. Then 35.0 s later, the cyclist is 49.0 m due north of the flagpole, going due east with a speed of 14m/s.
The velocity of an object undergoing linear drag and no other forces can be described as: v(t)=v0e^t/?, Calculate the position x(t), and acceleration a(t) of the particle as a function of time t
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