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Four passengers with combined mass 250 kg compress the springs of a car with worn out shock absorbers by 4.00cm when they enter it. Model the care and passengers as a single body on a single ideal
A block is attached to a spring with unknown spring constant oscillates with a period of 2.00 s. what is the period if (a) the mass is doubled? (b) the mass is halved? (c) the amplitude is doubled?
Two events occur in an inertial system K at the same time but 7 km apart. What is the time difference measured in a system K' moving between these two events when the distance separation of the even
Ignoring any change in the glass containing the mercury, what will be the height of the mercury column for the same one atmosphere of pressure when the temperature rises to 38.0 °C on a hot day?
An air-track glider attached to a spring oscillates between the 10 cm mark and the 60 cm mark on the track. the glider completes 10 oscillations in 33s. what are the (a) period, (b) frequency, (c)
An angular function is given as theta = 17rad + 8 rad/s t - 0.4 rad/s3t3. a) What is the average angular velocity (w) from 0 to 5s? b) What is the instantaneous angular velocity (w) at 0 and at 5s?
You pass the patrol car 17 seconds after you initially applied the brakes and are relieved that he doesn't pull out after you. How far away was the highway patrol car when you first saw it?
You can estimate the diameter by knowing the tensile strength of steel cable is about 5 x 10^8 N/m. Furthermore, the mass of Earth is 6 x 10^24 kg and the mass of the moon is 7.4 x 10^22 kg. The ave
Heat loss through the walls amounts to approximately 860 kcal/h. If the air is to be maintained at 20°C, what minimum wattage must the heater have? (The specific heat of air is about 0.17 kcal/k
When a jet aircraft is taking off, the sound intensity level experienced by the crew member is 84 dB. What sound intensity level would the crew member experience if he removed the protective earplug
The source at the origin emits four times as much power as the other source. Where on the x axis are the two sounds equal in intensity?
The mass of a copper atom is 5.14 x 10-25 kg, and the density of copper is 8 920 kg/m3. so Find the edge dimension of each cube, which represents an estimate for the spacing between atoms ????
Water flows at 0.25 L/s through a 12-m-long garden hose 2.5 cm in diameter that is lying flat on the ground. The temperature of the water is 20 degrees C. What is the gauge pressure of the water where
A pump is used to empty a 4000 L wading pool. The water exits the 3.0-cm-diameter hose at a speed of 2.2 m/s . How long will it take to empty the pool?
A 95 kg clock initially at rest on a horizontal floor requires a 650 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 560 N keeps it moving with a constant
Suppose a particle with a positive charge were to move a certain distance, say 0.1 meters, in a uniform electric field. What direction should it move in order for the field to do the greatest amount
If the average force of friction is equal to one-fifth of its weight, with what speed will the car reach the lowest point, which is 35.0m below the highest point? The distance traveled is 45.0m.
Find the work done on the skateboard by the rope in 25 seconds. Assuming the velocity of the bike is the same as that of the skateboarder, find the work the bike does on the bicycle in 25 seconds.
What is the volume V of a sample of 4.30 mol of copper? The atomic mass of copper (Cu) is 63.5 g/mol, and the density of copper is 8.92 x 103 kg/m3.
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.70 cm. (a) What is the work done by the f
At what speed v does the gasoline begin to shoot out of the hole? Assume the pressure outside the tank is 1 atm or 1.01×105 Pa.
A river 16.0 m wide and 5.0 m deep drains a 3000.0 km2 land area in which the average precipitation is 48 cm/year. One-eighth of this rainfall returns to the atmosphere by evaporation, but the remai
In the simulation above the length and orientation of the blue and yellow vectors can be changed by dragging the tips of the vectors. Given the limits available in the simulation, find the following
what is the final voltage across the plates and the final energy stored?
A string is tied between two walls 8 m apart. Which of the following is not an allowed standing wavelength for this string?