Physics, 14.09.2019 09:30 silviamgarcia
In an effort to protect a rhino, volunteers are following its steps with air monitoring and ground cameras. the rhino starts on day 1 from ground camera a and walks for 1.5 km west along a straight line as seen from the air. the rhino then moves 0.7 km on a straight line in a direction of 15° east of north toward ground camera b. in this location the rhino may find water and food, therefore the animal stays for the night. on the second day, the rhino moves 2.5 km directly south as recorded from the air by the volunteers. in these two days of tracking how far and in which direction does the rhino travel from camera a?
Answers: 3
Physics, 22.06.2019 15:30
The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.
Answers: 1
Physics, 22.06.2019 18:00
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
Physics, 22.06.2019 23:30
1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?
Answers: 3
In an effort to protect a rhino, volunteers are following its steps with air monitoring and ground c...
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