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A golf club with 70j of energy strikes a stationary golf ball with a mass of 48.0 g. The energy transfer is only 21% efficientCalculate the initial speed of the golf ball.
5. Explain the law of conservation of mass affects the kinetic and gravitational potentia energy of a downhill skier at the top, middle and bottom of a hill.
4. How much gravitational potential energy does a bird with a mass of 0.62 kg have it is 11.3 m in the air ?
3. A motorcycle and its driver have a total mass of 485.0 kg. How fast in km/h is the motorcycle moving if it has kinetic energy of 30.0 ?
2. A child pulls a wagon by the handle along a flat sidewalk. She exerts a force of 76.0 N at an angle of 27 degrees ° above the horizontal while she moves the wagon 22.0 m forward. The force of friction on the wagon is 17.0 N. a) Calculate the mechanical work done by the child on the wagon. b) Calculate the total work done on the wagon.
1. A tow truck pulls a car from rest on a level road. The tow truck exerts a horizontal force of 1800 N on the car. The frictional force on the car is 950 N. Calculate the work done on the car by each of the following forces if the car is pulled forward 600 meters. a) the force of the tow truck on the car b) the force of friction c) the force of gravity d) the normal force
Sketch an x-ray tube and label the electron gun and anode. Indicate the polarity of the accelerating voltage,
the direction of electron flow and the direction of the current.
Consider a vector of magnitude 3 units and in the direction of +X axis.This is followed by another vector 4 units parallel to the +y axis. What is the resultant of the two vectors
determine the volume, internal energy, enthalpy, entropy and density of 3kg of steam at a pressure of 5mn/m² and with a temperature of 350°c
A group of bike riders took a trip that lasted a total of 10 hours. During the first 7 hours, they traveled a total of 100 kilometers north. during the last 3 hours, they traveled 30 kilometers south. what was the groups distance traveled for the entire trip?
#339914 on Dec 2023