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A ranger in a national park is driving at 41 km/h when a deer jumps onto the road 64 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration o
A 1380 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.95 × 10 5 km from the planet's center. Its angular speed at this radius is the same as the rotational speed of
Draw a possible trajectory for which the puck makes three collisions with only two sides of the square, and draw a possible trajectory for which the puck makes three collisions with three sides of t
A bubble having a diameter of 1.0 cm is released from a depth of 5 m from the bottom of a swimming pool. What will the diameter of the bubble be when it reaches the surface? The temperature of the
The dielectric plate is now slowly pulled out of the capacitor, which remains connected to the battery. Find the energy of the capacitor at the moment when the capacitor is half-filled with the diel
Find the tension in each of the two ropes supporting a hammock if one is at an angle of = 12 above the horizontal and the other is at an angle of = 39 above the horizontal.
A 291-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic frictio
A 20-kg traffic light hangs midway on a cable between two poles 40 meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?
Three long wires (wire 1, wire 2, and wire 3) hang vertically. The distance between wire 1 and wire 2 is 20.0 cm. Find the following the position of wire 3
A 4 V flashlight battery has an internal resistance of 1.5 ohm when new, and 5 ohm when old. Imagine this is a resistor in series with the battery mounted INSIDE the battery itself, which describes
A 20-kg traffic light hangs midway on a cable between two poles 4meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?
Calculate the tension in a horizontal string that whirls a 3-kg toy in a circle of radius 3 m when it moves at 1 m/s on an icy surface
A automobile travels 3km due north,then 5km north-east. Determine the magnitude and direction of its displacement and direction of its displacement graphically and analytically.
A recent tomb has been unearthed in Egypt that shows a set of wall paintings and hieroglyphics of stars falling to and rising above the horizon over the course of the year (these stars served as sen
In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 2.70 104 m/s at a distance d above the wire. Ignoring the magnetic field due to the Earth, determine
Will the gravitational potential energy increase, decrease, or stay the same?assume a density for the region before collapse, although your estimate will be uncertain by a factor of order unity. Doe
A 8 kg sled is initially at rest on a horizontal road. The sled is pulled a distance of 3.2 m by a force of 36 N applied to the sled at an angle of 30o to the horizontal. Find the change in the kin
A golf ball with an initial angle of 34? lands exactly 240 m down the range on a level course. The acceleration of gravity is 9.8 m/s2 .
The angular velocity of the idler pulley is 4 rad/s clockwise. If the total acceleration of point B is 2400 mm/s2, what is the angular velocity of the idler pulley?
For each of the following types of binary systems, list which of the following physical quantities can be determined: total mass, mass ratio, individual masses, inclination angle. If instead a lowe
After falling a distance D = 0.52 m, starting from rest, the mass has a speed of v = 75.400 cm/s. Calculate the energy lost to friction during that time.
You're driving down the highway late one night at 15 {rm m}/{rm s} when a deer steps onto the road 42 {rm m} in front of you. Your reaction time before stepping on the brakes is 0.50 {rm s}, and th
The active element of a certain laser is made of a glass rod 33.0 cm long and 1.60 cm in diameter. What is the increase in its length? What is the increase in its volume?
A uniform plank of length 4.3 m and weight 216 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who wei
A uniform plank of length 4.3 m and weight 216 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who we