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(a) How long does it take him to catch up to the empty box car? (b) What is the distance traveled to reach the box car?
512 g of an unknown metal at a temperature of 15 degrees Celsius is dropped into a 100 g aluminum container holding 325 g of water at 98 degrees Celsius. A short time later, the container of water a
Observe the sparks produced when the bare ends of the wires are touched together. Explain the cause of the spark produced when the contact is broken.
A 42 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporizati
A wheelchair marathoner has a speed of 5 m/s after rolling down a small hill in 1.5 s. If the wheelchair underwent a constant acceleration of 3 m/s2 during the descent, what was the marathoner's sp
For two forces whose magnitude are 400 U and 300 U. find the maximum and minimum magnitudes of their vectors. What directions do the the forces F1 and F2 need to have to provide these magnitudes of
What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary and that it may be treated as a point charge. The atomic number of gold is 79, and an
Suppose after charging a 14.4 µF capacitor to 15 V, you connect it to another already charged capacitor of 7 µF and 9 V. What voltage will your voltmeter read across those two capacitors
Suppose after charging a 3.7 µF capacitor to 6 V, you connect it to the second uncharged capacitor of 12 µF. What voltage will your voltmeter read across the second capacitor after repea
When a force is moved to a point not along its line of action, it can be replaced with:
When calculating the scalar moment magnitude we use the equation M = Fd.
How many coulombs of charge enter a 1.20 length of the axon during this process? (answer in nC)
A car is exiting the 105 freeway at Sepulveda South at a constant speed of 40 miles per hour. The freeway ramp is a long un-banked circular with radius 30 meters. The mass of the car is 1200 kg.
An observer on the train, however, sees the drops fall perfectly vertically. Determine the speed of the raindrops relative to the ground.
A falling stone takes 0.33s to travel past a window 2.2m tall. From what height above the top of the window did the stone fall?
Assume that the conductiApproximately how long should it take 11.9 kg of ice at 0 degrees C to melt when it is placed in a carefully sealed Styrofoam ice chest of dimensions 25cm* 34cm* 57cm whose w
The best rebounders in basketball have a vertical leap (that is, the vertical movement of a fixed point on their body) of about 130cm. How long are they in the air?
A scuba diver releases a 2.21 cm -diameter (spherical) bubble of air from a depth of 13.2 m in a lake. Assume the temperature is constant at 298K, and the air behaves as a perfect gas. How large is
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 18.0 m/s at an angle 42.0 degrees; with respect to the horizonta
At a time 9.36 seconds after it is released, the particle has a kinetic energy of 8.49 × 10-8 joules. How long after the particle is released has it travelled through a potential difference of 0
In an alcohol-in-glass thermometer, the alcohol column has length 11.84 cm at 0.0 degrees C and length 22.87cm at 100.0 degrees C . What is the temperature if the column has length 16.00cm ? What is
Unlike the electric field, the potential will be zero at multiple points near the particles. Find the two points along the x axis at which the potential is zero, and express their locations along th
Is there any difference between the intensive properties of saturated vapor at a given temperature and the vapor of a saturated mixture at the same temperature?
A potential difference is applied between the electrodes in a gas discharge tube. In 2.0 s, 3.1 x1016 electrons and 1.1 x 1016 singly charged positive ions move in opposite directions through a surf