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A 0.1kg ball starts from rest and rolls 5.8m down a short ramp so that it drops 1.8m vertically. Calculate the speed of the ball at the bottom of the ramp
Hey, Hope your having a great day! Can you list 3 or more physical and social outputs on industrial evolution?
A robin of mass 110g speeds up from 12.3 m/s to 15.4 m/s in level flight. Calculate how much work is done by the robin on its mass
A car travelling at 100.0 km/h sounds its horn as it approaches a hiker standing on the highway. If the car’s horn has a frequency of 440 Hz and the temperature of the air is 0°C, what is the frequency of the sound waves reaching the hiker
(a) as the car approaches?
(b) after it has passed the hiker?
A radio-controlled model airplane is being flown at 48.3 km/h. if the plane is being flown at Mach 0.040, what is the temperature of the air, to the nearest degree?
- A crest of a water wave requires 5.2 s to travel between two points on a fishing pier located
19 m apart. It is noted in a series of waves that 20 crests pass the first point in 17 s. What is the wavelength of the waves?
A jet is flying at a speed of 356 m/s in an air temperature of 25.0 C. What is the Mach number of the jet
A plane is travelling at Mach 0.58. If the local speed of sound is 300 m/s, what is the airspeed of the plane, in kilometers per hour?
The D string of a guitar is stretched to a tension of 150 N. The string has a mass of 3.4 g and is stretched to a length of 0.69 m. What is the speed of waves on the string
1.)How much energy is lost by 20 kg copper if it is cooled from 50℃ to 30℃?
2.)A 20 kg metal rod is heated 100oC with 2000 J of energy. What is the specific heat of the metal?
