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The snow is level and the coefficient of friction is unchanged. How far does the skier move along the horizontal portion of the snow before coming to rest?
Two point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of cha
Planet Z is 8000km in diameter. The free fall acceleration on Planet Z is 5.0 m/s squared. What is the mass of Planet Z? What is the free-fall acceleration 8000 above Planet Z's
The catcher's glove is exactly 60.5 ft, how many full turns does the ball make between release and catch? Neglect any effect of gravity or air resistance on the ball's flight.
A 50 kg box is being pushed a distance of 7.0 m across the floor by a force whose magnitude is 164 N. The force is parallel to the displacement of the box. The coefficient of kinetic friction is 0.2
The jet plane travels along the vertical parabolic path. When it is at point A, it has a speed of 200 mps, which is increasing at the rate of 0.8 mps2. Determine the magnitude of acceleration of th
The force exerted by the wind on the sails of a sailboat is 300 N north. The water exerts a force of 150 N east. If the boat (including its crew) has a mass of 300 kg, what are the magnitude and dir
The block slided down the inclined and strick the second block mass of 3.5 kg. If the two blocks stick together, with what speed will they move immediately after the impact?
a 340g glass mug at 20.0 degrees Celsius is filled with 250 ml of water at 96 degrees Celsius. what is the final temperature of the mug.
The solenoid is to be constructed from copper wire having a diameter of 0.500 mm. If the radius of the solenoid is to be 1.00 cm, determine the number of turns of wire needed.
A curve of radius 70 m is banked for a design speed of 110 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve?
Two parallel wires are separated by 5.90 cm, each carrying 3.05 A of current in the same direction. (a) What is the magnitude of the force per unit length between the wires?
a shot-putter accelerates a 7.3kg shot from rest to 14m/s. if this motion takes 1.5 s, what average power was developed?
A father racing his son has half the kinetic energy of the son, who has one-third the mass of the father. The father speeds up by 2.5 m/s and then has the same kinetic energy as the son. (a) What is
A 0.712-kg mass attached to a vertical spring of force constant 155 N/m oscillates with a maximum speed of 0.366 m/s. Calculate the period related to the motion of the mass.
The surfaces of the lens have radii of curvature 25.5 cm (located on the object side of the lens) and 51cm (located on the side opposite to the object side of the lens). What is the index of refrac
A 0.144 kg baseball is pitched horizontally at +38 m/s and after it is hit by a bat it moves horizontally at -38 m/s.
To water the yard you use a hose with a radius of 3.5 cm. Water flows from the hose with a speed of 1.1 m/s. If you partially block the end of the hose so the effective radius is now 0.55 cm, with
Romeo (76.0 kg) entertains Juliet (56.0 kg) by playing his guitar from the rear of their boat at rest in still water, 2.80 m away from Juliet, who is in the front of the boat. After the serenade, J
A cannonball is fired toward a vertical building 448 away with an initial velocity of 80.0 at 36.9 above the horizontal. how many seconds will it take for the ball to hit the building?
A unfiform electric field of magnitude 375 N/C pointing in the positive direction acts on an electron, which is initially at rest. After the electron has moved 3.20 cm. What is the velocity of the
A 1650-kg car is traveling at 34.0 m/s. How fast must a 91.0-kg bicycle and rider be traveling to have the same kinetic energy as the car?
An ocean liner sailing at 43.4 m/s is caught in a current flowing 11.2 m/s at 24.7 degrees east of south what is the direction (angle) of the overall speed of the ocean liner?
Seven-and-a-half seconds later the astronaut comes into contact with the shuttle. What was the initial distance from the shuttle to the astronaut?