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A golf club hits a golf ball. It applies a force of 100 N at an angle 60 degrees above the horizontal. Which of the following is the correct calculation for the force parallel to the ground?
What is gravitational force? Why is acceleration that gravity causes on freely falling objects constant? And what are the formulas that describe displacement and the velocity
A 0.25kg object is tied to a 0.4m rope and swung around a central point at a tangential velocity of 2.0m/s. What is the net force acting on the object?
A basketball player grabbing a rebound jumps 70.80 cm perpendicularly. How much total time (ascent and descent) does the player spend (a) in the top 11.2 cm of this jump and (b) in the bottom 11.20 cm? Do your results describe why such players see..
Calculate the pH of a titration of 50.00 mL of 0.100 M acetic acid (HOAc), Ka = 1.76 x 10-5, with 0.100 M NaOH at the following points:
If the rope starts at an angle of 30.0° with the vertical, illustrate what is Bruce's speed at the bottom of the swing?
A bug is 10 cm from a diverging lens. The image is upright and magnified 1.5x. What is the focal length of the lens
A parallel-plate air capacitor of capacitance of 270 pF has a charge of magnitude 0.140 µC on each plate. The plates are 0.306 mm apart. What is the area of each plate? What is the surface charge density on each plate? What is the potential dissimil..
A fisherman in a boat is using a "10-lb A fisherman in a boat is using a "10-lb test" fishing line. This means that the line can exert a force of 45N without breaking. How heavy a fish can the fisherman land if he pulls the fish up vertically at co..
Two loudspeakers emit sound waves along the x-axis. A listener in front of both speakers hears a maximum sound intensity when speaker 2 is at the origin and speaker 1 is at x = 0.550 meter. Obtain the phase difference between the speakers
For a typical rubber-on-concrete friction, what is the shortest time in which a car could accelerate from 0 to 50 mph? Suppose that us=1.00 uk=0.80 and ur=0.002
Calculate the mass difference in atomic mass units, between the helium nucleus and its constituent nucleons
A 300kg piano slides 4.10 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.4. Determine the force exerted by the man.
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