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A 4.3 kg block slides along a frictionless surface at a constant velocity of 6.2 m/s in the positive direction and collides head-on with a stationary block in an elastic collision. After the collis
Two crates, of mass m1 = 45 kg and m2 = 115 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 45 kg crate. The coefficient of kinetic friction is 0
At what angle of incidence will green light (g = 560 nm) be most strongly reflected? Assume the film has the minimum thickness that can produce these reflections. in degrees
A 4.00-m-long, 500 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70.0 kg construction worker stands at the far
A hollow sphere (M = 7.69 kg, R = 0.648 m) is rolling without slipping on a horizontal surface with its center of mass. Find a, the magnitude of the linear acceleration of the ball on the incline.
An aquarium contains a 5-cm layer of water (n = 1.33) floating on top of carbon tetrachloride (n = 1.461). If the angle of incidence into the water from the air is 30, what is the angle of refractio
The only appropriate location for an emergency landing is 100 km north of their current position, though this still involves significant risk to the crew. Should they attempt to return to the airstr
Suppose the wire will snap when the magnitude of the tension is T = 149 N. Find x, the distance a man of mass m = 88.8 kg can climb up along the ladder before the wire snaps.
An arrow is shot from a bow at an angle of 35º above the horizontal with an initial speed of 50. m/s. What are the arrow's horizontal (x) and vertical (y) components?
In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 {rm N}. Find the acceleration of the sled and child.
A hollow cylindrical (inner radius = 1.0 mm, outer radius = 3.0 mm) conductor carries a current of 80 A parallel to its axis. This current is uniformly distributed over a cross section of the condu
A rectangular plate has a length of (23.2 0.2) cm and a width of (7.2 0.1) cm. Calculate the area of the plate, including its uncertainty.
Then an equal number of molecules of the same gas is added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature?
a) Determine the acceleration of the block when x=.400m b) Describe the general behavior of the acceleration as the block slides from a location where x is large to x=0. c) Find the maximum value of
A student calculates the frequency of a waveform produced by a tuning fork to be 303 Hz. If the tuning fork is stamped with a frequency of 279 Hz, what is the percent error for the experiment?
Three charged particles are placed at the corners of an equilateral triangle of side 1.20 m. The charges are + 7.0 mc,-8.0 mc and -6.0 mc. Calculate the magnitude and direction of the net force on
Suzie (of mass 78 kg) is roller-blading down the sidewalk going 48 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop
If the table is 1 m above the floor and the impact point is 1.5 m horizontally from the gun, what is the velocity of the ball when it leaves the gun? What is the time of flight?
Two particles of masses m and 3m are moving toward each other along the x-axis with the same speed v. They undergo a head- on elastic collision and rebound along the x- axis. Determine the final sp
A superhero flies 147 m from the top of a tall building at an angle of 31 degrees below the horizontal. What is the vertical component of the superhero's displacement?
The molecule has a rotational kinetic energy that is of the translational kinetic energy of its center of mass. What then is the molecule's angular speed about the center of mass?
The Moon's mass is 1/80 that of Earth, and the lunar radius is 1/4 Earth's radius. Based on these figures, calculate the total weight on the Moon of a 100-kg astronaut with a 50-kg spacesuit and ba
A long hollow cylindrical conductor (inner radius = 2.0 mm, outer radius = 4.0 mm) carries a current of 12 A distributed uniformly across its cross section. A long wire which is coaxial with the cy
Vector is 6.2 units long and points along the negative axis. Vector is 8.1 units long and points at 30 to the positive axis. What is the magnitude of the sum?
Circuit containing a 15Ω resistor is perpendicular to a uniform magnetic field that starts out at 2.65T and steadily decreases at 0.25T/s. While this field is changing, what does the ammeter r