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Question: After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 53.0 cm. The pendelum completes 104 full swing cycles in a time of 127 seconds.  What is the magnitude of the gravitational acceleration on this planet? Express in m/s^2.
Two ships, A and B, leave port at the same time. Ship A travels northwest at 16 knots and ship B travels at 21 knots in a direction 40° west of south, What is the direction of the velocity of ship A relative to B
The mean surface temperature of the torch is 30.0°C, and it uses 0.100 m3 /s of oxygen at STP (0.101325 MPa, 20.0°C). Assuming ideal gas behavior, determine the work and heat transfer rates.
An aircraft weighing 978 Newton is accelerated at 13 m/s2 for 13 seconds, at which time the aircraft launches. Compute how much work was done on the aircraft
A converging lens and a diverging lens, separated by a distance of 20.5 cm, are used in combination. What is the focal length of the diverging lens
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
Matthew pulls his little sister Sarah in a sled on an icy surface (no friction) with a force of 60 N at an angle of 600 upward from the horizontal
A power plant burns coal and generates anaverage of 650.0 Megawatts (MW) of electrical power whiledischarging 1001.00 MW as waste heat. Find the total electricalenergy generated by the plant in a 30-day period.
Nitrogen in a container (molar mass is 28 g/ mol) has a pressure of 2.59 atm, a volume of 0.200 m3 and a temperature of 30 degrees. What is the mass of the nitrogen
A rod of length L and mass M is balanced in a vertical position at rest. The rod tips over and rotates to the ground with its bottom attachment to the ground never slipping. find the velocity of the tip just before it hits
A steel beam 10m long is installed in a structure at20oC. What are the beam's changes in length at thetemperature extremes of -30oC to45oC
A person is sitting on a freely spinning lab stool (no friction). is her angular velocity increasing or decreasing
An object initially at rest explodes and splits into 3 fragments. the first fragment flies off to the west, and the second fragment flies off to the south. what is the direction of the third fragment
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