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A very fast-moving train car passes you, moving to the right at 0.50c. You measure its length to be 12m . Your friend David flies past you to the right at a speed relative to you of 0.80c.
How long does David measure the train car to be?
Prepare journal entries to record the actual revenues and expenditures. Assume all transactions resulted in increases or decreases in cash.
Consider the following definition of discrimination
Dividend Yield The market price for Macro Corporation closed at $33.07 and $47.93 on December 31, 2008, and 2009, respectively. The dividends per share were $0.42 for 2008 and $0.58 for 2009.
120-v rms signal at 60.0hz is applied across a 30.0mH inductor and a 100 resistor. what is the rms value of the voltage across the inductor
Accrued $576 interest on Elkin City bonds. Dec. 31 Accrued $620 interest on Morgan Co. bonds. 2013 Mar. 1 Received semiannual interest on the Elkin City bonds. June 1 Received semiannual interest on the Morgan Co. bonds.
A violin string vibrates at 264 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way down from the end
In Career Focus: A Personal Job Search Guide, Martucci Lamarre (2006) suggests that if we want to realize our job dreams, we need to think about ourselves as products to be marketed.
An elastic cord is 63.9 cm long when a weight of 71.1 N hangs from it but is 88.9 cm long when a weight of 184 N hangs from it. What is the "spring" constant k of this elastic cord
Watson uses four units of direct material in each finished unit. The direct material price has been stable and is expected to remain so over the next six months.
A irregular piece of metal has a dry mass of 5.7 kg. Once it is submerged it has an apparent mass of 2.4 kg. What is the density of the piece of metal
A physicist has developed a device that generates a beam of alpha particles (each of which is a helium nucleus, consisting of two protons, two neutrons, and no electrons).
So as to simulate weightlessness for astronauts in training, they are flown in a vertical circle. If the passengers are to experience weightlessness, how fast must an airplane be moving at the top of a vertical circle with a radius of 1545 m.
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
In making raspberry jelly, 887 g of raspberry juice is combined with 930 g of sugar. The mixture starts at room temperature, 23.0°C, and is slowly heated on a stove until it reaches 220°F, How much energy does the mixture absorb
The rms current in a solenoid is 0.036 A when the solenoid is connected to a 18 kHz generator. What is the peak voltage of the generator
A major-league catcher gloves a 85 mi/h pitch and brings it to rest in 0.17m. If the force exerted by the catcher is 803 N, what is the mass of the ball.
An electron librated from a hot filament cathode is attracted by an anode with a potential of 1200V positive with respect to the filament. Compute the speed of the electron when it strikes anode.
A dead tree is initially stationary and there is a 30.0-degree angle between the tree and the vertical, How fast is the top of the tree moving (in m/s) just before it hits the ground
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
Find an average magnitude of the induced emf . A bungee jumper, who's mass is 79 kg, jumps from a tall building. After reaching his lowest point, he continues to oscillate up and down, reaching the low point two more times in 8.2 s.
A 5.6cm diameter horizontal pipe gradually narrows to 2.9cm. When water flows through this pipe at a certain rate, What is the volume rate of flow
A hockey player strikes a 166 g puck, accelerating it from rest to 48 m/s. If the hockey stick is in contact with the puck for 2.5 ms, what is the average force applied by the stick
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