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a ship sails away from an iceberg. determine the temperature of the air if the distance of the ship from the iceberg is 846.3m after 2.6s V0°C=331.5m/s
eight seconds after a sound was emitted by a sonic altimeter, the echo is heard. How high is the airplane if the temperature is 10°C?
What force must be exerted on the master cylinder of a hydraulic lift to support the weight of a 2 500 kg car a large car resting on the slave cylinder? The master cylinder has a 4.00 cm diameter and the slave has a 25.0 cm diameter.
a lightning flash was seen 2 seconds before the clap of thunder. If the temperature was 25°C, how far away did the lightning occur
A 0.75 kg board of length 2.60 m initially rests on two supports as shown. What maximum distance, x, from the right-hand support can a 1.20 kg bird walk before the board begins to leave the left-hand support
Three point charges q1, q2 and q3 are located at the corners of an equilateral triangle with sides of 10 cm. The electrical forces between them are F12= 5.4 N (attractive), F13= 15 N (repulsive) and F23= 9 N (attractive). Given that q1 is negative, what are the values of q2 and q3?
(Answer: q2= 1.89 μC and q3= -5.28 μC)
If you change the mass and volume does the density of a fluid changes?
Solve: 1. D= 1000kg÷ 4m^3
2. D= 1000kg÷ 2m^3
3. D= 600kg÷ 3m^3
4. D= 400kg÷ 3m^3
A 62kg shell is shot from cannon.
What is the gravitational potential energy id tye shell reaches an450m height
What is the change in potential energy of the system when the shell falls to a height if 300m
A car’s speed increases uniformly from 20.0 km/h to 60.0 km/h in 20.0 s.
A snooker ball X of mass 0.3kg moving with a velocity 5m/s hit a stationary ball of mass 0.4kg.Y moves off with a velocity of 2m/s at 30degree to the initial direction of X.Find the velocity v of X and its direction after hitting Y.
