Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A pendulum with a length of 50 cm is pulled 30 cm away from the vertical axis and released from rest. What is its speed at the bottom of the swing?
Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the United States, per year.
A 1-kg object is attached to spring and executes simple harmonic motion with a period of 2 s. what is accelarationof the object at t=0?
Arrange the four energy units from largest to smallest
A uniform plank of length 4.8 m and weight 229 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
A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 101 m/s. The rocket moves for 3.00 s along its initial line of motion with an acceleration of 28.0 m/s2. A
A neautral water molecule in its vapor state has an electric dipole moment of magnitude 6.2x10^-30 C.m. How far apart are the molecule's center of positive and negative charge?
What is the final equilibrium temperature when 14 g of milk at 16?C is added to 193 g of coffee at 89?C? Assume the specific heats of milk and coffee are the same as that of water, and neglect the s
If the area of the front of the house is 42 m^2, what is the resulting net force exerted by the air on the front of the house?
The hunter uses a small powerboat that moves at a maximum speed of 14 km/h with respect to the water. What is the minimum time necessary for crossing?
A krypton laser produces a cylindrical red laser beam 2.0 in diameter with 2.0 of power. What is the light intensity on a wall 2.5 away from the laser?
At this time, its engines fail and the rocket proceeds to move as a projectile. Find (a) the maximum altitude reached by the rocket, (b) its total time of flight, and (c) its horizontal range
If a 0.520 s reaction time is required before the brakes can be applied, what is the distance in meters traveled by the car before it begins to slow down?
two blocks of mass 3.5 kg and 8 kg are connected by a massless string that passes over a frictionless pulley the incline are frictionless. Find (a) the magnitude of the acceration of each block and
A 0.450-kg ice puck, moving east with a speed of 3.00 mis, has a head-on collision with a 0.900-kg puck initially at rest. Assuming a perfectly elastic collision, what will be the speed and directio
A certain superconducting magnet in the form of a solenoid of length 0.30 m can generate a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niob
If the bullet-block system compresses the spring by a maximum of 74.0 cm, what was the speed of the bullet at impact with the block?
A steel ball bearing is 6 cm in diameter at 22?C. A bronze plate has a hole that is 5.993 cm in diameter at 22?C. What common temperature must they have in order for the ball to just squeeze throug
A tortoise can run with a speed of 0.12 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time how long does the race take?
A 2.60 kg steel ball strikes a massive wall at 10.5 m/s at an angle of alpha = 59.5° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the
A 4.00 g lead bullet traveling at 390 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half i
A cube of ice is taken from the freezer at -7.7°C and placed in a 98 g aluminum calorimeter filled with 296 g of water at room temperature of 20°C. The final situation is observed to be all
If you were standing on the equator, which of the following positions in the sky would pass through your zenith at some time in one 24-hour period?
A 15 g rifle bullet traveling 220 m/s buries itself in a 3.5 kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the p
Assume that the earth is a uniform sphere and that its path around the sun is circular. Calculate the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the