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Suppose a soccer player kicks the ball from a distance 30 m toward the goal. Find the initial speed of the ball if it just passes over the goal, 2.4 m above the ground, given the initial direction to be 40. above the horizontal.
A 200-N sled of slides down a frictionless hillside that rises at 37A above the horizontal. What is the magnitude of the force that the hill exerts.
A 55 kg person riding a bike puts all her weight on each pedal when climbing a hill. The pedals rotate in a circle of radius 17 cm. (a) What is the maximum torque she exerts? (b) How could she exert more torque?
a frictionless track with a loop of radius 25 cm sits on a table 0.8 meters above the ground. if a 0.3 kg object just
A solid cylindrical disk has a radius of 0.19 m. It is mounted toan axle that is perpendicular to the circular end at its center. What is the mass of the disk
An important factor in many biochemical cell processes is the potential difference across a cell membrane. The inside of a cellis at a lower electric potential than the outside, with a potential difference of 0.080 V between them.
A compound microscope has an objective lens of focal length 15.0 mm and an eyepiece that gives an angular magnification of 5.00 for a final image at infinity, What is the total magnification of the microscope
500 mL of a liquid with a coefficient of volume expansion of 205x10-6/oC fills to the brim a container that has a coefficient of volume expansion of 105x10-6/oC. how much of the liquid will overflow the container
The following table of data shows a linear relationship between two variables, s and t. If you were to plot s vs. t, what would the slope be and what would the y-intercept be? (Note: You do not need to make a graph.)
An 80 kg window cleaner sits 1.8 meters from the end of a 5 meter long scaffold that is supported at either end by a vertical wire. Suppose the scaffold is a uniform beam by a mass of 40 kg and find the tension in each wire.
though the statement quoted above may by disputed most physicists do have a feeling that the great laws of physics are
A 0.244 H inductor is connected to a capacitor and a 44.5 ? resistor along with a 37.2 Hz, 46.1 V generator. Find the voltage drop across the resistor at resonance
How many coulombs of positive charge are there in 4.20 kg of plutonium, given its atomic mass is 244 and that each plutonium atom has 94 protons
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