Questions from College Physics

Q: In a lab experiment, two identical gliders on an air track

In a lab experiment, two identical gliders on an air track are held together by a piece of string, compressing a spring between the gliders. While they are moving to the right at a common speed of 0.5...

Q: An archer fish spies a meal of a grasshopper sitting on a

An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the pond in which he is swimming. If the fish is to successfully spit at and strike the grasshopper, which...

Q: A convex lens of refractive power +12 D is used as

A convex lens of refractive power +12 D is used as a magnifier to examine a wildflower. What is the angular magnification if the final image is at (a) infinity or (b) the near point of 25 cm?

Q: An arrow is shot into the air at an angle of 60

An arrow is shot into the air at an angle of 60.0° above the horizontal with a speed of 20.0 m/s. (a) What are the x- and y- components of the velocity of the arrow 3.0 s after it leaves the bowstrin...

Q: A refracting telescope has an objective lens with a focal length of

A refracting telescope has an objective lens with a focal length of 2.20 m and an eyepiece with a focal length of 1.5 cm. If you look through this telescope the wrong way, that is, with your eye place...

Q: A ballplayer standing at home plate hits a baseball that is caught

A ballplayer standing at home plate hits a baseball that is caught by another player at the same height above the ground from which it was hit. The ball is hit with an initial velocity of 22.0 m/s at...

Q: Two converging lenses, separated by a distance of 50.0

Two converging lenses, separated by a distance of 50.0 cm, are used in combination. The first lens, located to the left, has a focal length of 15.0 cm. The second lens, located to the right, has a foc...

Q: You are planning a stunt to be used in an ice skating

You are planning a stunt to be used in an ice skating show. For this stunt a skater will skate down a frictionless ice ramp that is inclined at an angle of 15.0° to the horizontal. At the bottom of th...

Q: An object is placed 20.0 cm from a converging lens

An object is placed 20.0 cm from a converging lens with focal length 15.0 cm (see the figure, not drawn to scale). A concave mirror with focal length 10.0 cm is located 75.0 cm to the right of the len...

Q: Jason is practicing his tennis stroke by hitting balls against a wall

Jason is practicing his tennis stroke by hitting balls against a wall. The ball leaves his racquet at a height of 60 cm above the ground at an angle of 80° with respect to the vertical. (a) The speed...