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a) How much force is the air exerting on the front cover of a book that is 23.9 cm long and 16.9 cm wide?
b) What mass has a weight equivalent to this force?
A spherical balloon has the potential to reach a diameter of 35 cm, what would be the volume of this balloon when it reaches a pressure of 0.75P0 and a temperature of -15°C
What is the speed of the large cart after the collision. A 345 g chunk of gold at 98.5 degrees Celsius is dropped into a 656 g of water at 22.5 degrees Celsius. What will final temperature of the gold be after the system reaches equilibrium.
Skid is going to attempt a field goal by kicking the football from a point 40 yards out from the goal. The ball must clear the cross bar that is 3m off of the ground. Skid kicks the ball with a velocity of 20m/s at an angle of 45 degrees.
A stunt driver wants to make his car jump over eight cars parked side by side below a horizontal ramp, what is the new minimum speed
A violin string 30.00 cm long and fixed at both ends oscillates in its n = 1 mode. The speed of waves on the string is 280 m/s, What is the wavelength of the emitted sound wave
An atomic spectrum contains a line with a wavelength centered at 450nm, Estimate the lifetime of the excited state
A generating station is producing 2.00 106 W of power that is to be sent to a small town located 8.0 km away. Find the power used to heat the wires if the power is transmitted at 1300 V
The sliding bar in the figure has a length of 0.513 m and moves at 1.76 m/s in a magnetic field of magnitude 0.263 T. Calculate the magnetic force on the bar
When kicked, the ball leaves the ground with a speed of 29.0 m/s at an angle of 51° to the horizontal. Explain by how much does the ball clear or fall short of the crossbar?
A ford focus has a wheelbase of 274cm. Upon weighing, it is found that the front wheels have a weight of 7000 N, What is the weight of the vehicle
A rigid, well insulated container contains 10 kg of water. A motor connected to a paddle wheel is used to stir the water at a rate of 100 rad/s. How much toque does the motor need to supply (in N-m) in order for the water to heat up by 10?C in one..
What is tension in the wire
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