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An object is placed on a horizontal surface which oscillates vertically with simple harmonic motion. When the frequency is increased to 7HZ, the object is on the point of losing contact with the sur
A proton (mass= 1.7×10-27 kg, charge= 1.6×10-19 C) travelling with speed 106 m/s enters a region of space containing a uniform magnetic field of 1.2 T. What is the time t required for th
The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 88.0 cm, what was the speed of the bullet at impact with the block?
The mass of a robot is 5900 kg. This robot weighs 3770 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 multiplied by 107 m. What is the difference MA - MB in
Gayle runs at a speed of 4.80 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is in
A rifle with a barrel length of 64 cm fires a 12 g bullet with a horizontal speed of 350 m/s . The bullet strikes a block of wood and penetrates to a depth of 10 cm .
A 46.0- person takes a nap in a backyard hammock. Both ropes supporting the hammock are at an angle of 19.0 above the horizontal. Find the tension in the ropes.
What is the coefficient of static friction between the crate and the floor? D.)Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the accelera
An airplane flies 200 km due west from city A to city B and then 320 km in the direction of 32.0° north of west from city B to city C. (a) In straight-line distance, how far is city C from city
A loudspeaker of mass 16.0 is suspended a distance of = 1.60 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 2.70 . What is the tension in each
The muon, with mass m=209me, acts as a heavy electron. The muon can bind to a proton to form a muonic atom. Calculate the ionization energy of this atom, and calculate the radius of the muonic atom
You are driving down the highway late one night at 20 m/s when a deer steps onto the road 35m in front of you. Your reaction time before stepping on the brakes is 0.50s , and the maximum deceleratio
54 kg pole vaulter running at 11 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altit
What is the magnitude of the impulse applied to the golf ball by the floor? (Hint: Note that only the vertical component of the ball's momentum changes during impact with the floor, and ignore the w
A Federation starship ( 2.20×106 kg) uses its tractor beam to pull a shuttlecraft ( 1.80×104 kg) aboard from a distance of 14.0 km away. The tractor beam exerts a constant force of 4.0 t
When the skateboarder reaches the highest point, how far is this point horizontally from the end of the ramp?
After being accelerated to a speed of 1.23×105 m/s, the particle enters a uniform magnetic field of strength 1.00 T and travels in a circle of radius 33.0 cm (determined by observing where it
How far due north would this person walk? How far due east would this person walk? Answer in km.
A skateboarder shoots off a ramp with a velocity of m/s, directed at an angle of above the horizontal. The end of the ramp is m above the ground. Let the x axis be parallel to the ground, the +y dir
A rifle with a barrel length of 58 cm fires a 12 g bullet with a horizontal speed of 450 m/s . The bullet strikes a block of wood and penetrates to a depth of 11 cm . What resistive force (assumed t
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to three times her w
If the speed of the child at the lowest position is 2.80 m/s, what is the mechanical energy lost due to friction?
Two packing crates of masses m1 = 10.0 kg and m2 = 3.00 kg are connected by a light string that passes over a frictionless pulley. The 3.00 kg crate lies on a smooth incline of angle 44.0°. Find
A car parked in the sun absorbs energy at a rate of 550 watts per square meter of surface area. The car reaches a temperature at which it radiates energy at this same rate. Treating the car as a per
What is the magnitude of the upward acceleration of the load of bricks? what is the tension in the rope while the load is moving? how does the tension compare to the weight of the load of bricks? To