Search
A plane is moving east at 200 km/hr. while you’re a moving west at 50 km/hr. If the frame of reference is you inside the car, describe the motion of the plane.
If you are riding in the backseat of a car moving 65 mph with your friend, how fast does your friend appear to be moving from your frame of reference? Explanation
How much work is expended by a man in moving a 500-N object to a height of 20 meters in 60 seconds?
a truck carries a 5.2 ton load of gravel.with this load it accelerates at 0.36m/s without a load the truck accelerate at 0.62m/s.what is the mass of the truck?the accelerating total force are the same in both area
250 mL of ethyl alcohol is placed in a Pyrex glass to the brim at 0°C. How much is the expansion of ethyl alcohol after heating it to 50°C? the expansion of glass? Will the ethyl alcohol overflow? (β of ethyl alcohol is 100 X 10-6 / °C and of Pyrex glass is 3.2 10-6 / °C)
In the figure, a cube of edge length a = 3.70 m sits with one corner at the origin of an xyz coordinate system. A body diagonal is a line that extends from one corner to another through the center. Find the angle between each pair of body diagonals.
A car’s engine provides a forward force of 500 N. It is opposed by a resistive force of 200 N. The car accelerates forwards for 20 m. How much work is done by each force? By how much does the car’s energy increase?
You have an empty balikbayan box that you placed in a horizontal uniform electric field. What would be the electric flux through the top, left, and right sides of this box of side 1.2 m if the electric field of 7.0 N/C is directed to the right?
the mass of a typical car is m=1000 kg, so it's weight on the earth's surface is mg=9800N. suppose you have two containers, one with N electrons and another with N protons. These two containers are placed a distance 10 m apart, and the electric force between them is equal to the weight of the car. find N.
Suppose the temperature of a COVID positive patient is recorded as Tbody = 40°C.
Determine the wavelength at which the radiation emitted from the body reaches its peak.
