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A. If event A occurs on Earth at time t=0, and event B occurs in the Proxima Centauri system (41y away) two years in the past, is the separation between these events space like or time like?
B. What is the proper (distance/time) between these two events?
C. How fast would you have to be moving for these events to be (simultaneous/co-locational)?
An airplane pilot wishes to fly directly westward. According to the weather bureau, a wind of 70.0 km/h is blowing toward the south. What is the speed of the plane over the ground
A laboratory receives a sample of a metallic alloy composed of aluminum and magnesium. The sample is a solid cylinder with a diameter of 2 cm and a length of 5 cm. Its mass is 15.70 g. What is its density? What is its specific gravity?
The mass of Jupiter is 317.8000 times that of earth, and its radius is 10.960 times that of earth. Compute the acceleration of gravity at the surface of Jupiter. Express your answer in g's (i.e. as a ratio to our acceleration of gravity).
The manufacturers of a particular brand of car conduct head-on collision tests and find that in the absence of a passenger side air bag, What is the average force exerted on the childs head during collision
question1a student decides to move a box of books into her dormitory room by pulling on a rope attached to a box. she
Consider the glass prism in the figure below, for which ? = 22° and ? = 68°. What is the smallest angle ?1 for which a laser beam will undergo total internal reflection
A hiker's trip consists of three segments. Path A is 8km long heading 65 degrees north of east. Path B is 7km long in a direction due east. Path C is 4.0 km long heading 313 degrees counter clockwise from east.
A series RLC circuit has a peak current of 2 Amp with a frequency of 61 kHz. If the resistance of the circuit is 57 kΩ, find the average power of the circuit over one cycle
A person fishing from a pier observes that four wave crests pass by in 7.0 second and determine that the distance between two successive crests is 4.0 meter. Evaluate what is the speed of the wave
50.0 mL of water at 10.0 ºC is placed in the freezer compartment of a refrigerator by a coefficient of performance of 6.00. How much heat energy is exhausted into the room as the water is changed to ice at -15.0 ºC?
Suppose that the mass of the dishwater is large as much as necessary so that its temperature does not change appreciably.
In an ice show a 45.0 kg skater leaps into the air and is caught by an initially stationary 85.0kg skater. What is their final velocity assuming negligible friction and that the leaper's original horizontal velocity was 4.00 m/s
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