Questions from Modern Physics

Q: What is the speed of a particle whose kinetic energy is equal

What is the speed of a particle whose kinetic energy is equal to a. its rest energy and b. five times its rest energy?

Q: The image formed by a microscope objective with a focal length of

The image formed by a microscope objective with a focal length of 5.00 mm is 160 mm from its second focal point. The eyepiece has a focal length of 26.0 mm. a. What is the angular magnification of th...

Q: When a particle meets its antiparticle, they annihilate each other and

When a particle meets its antiparticle, they annihilate each other and their mass is converted to light energy. The United States uses approximately 1.0 * 1020 J of energy per year. a. If all this en...

Q: The eyepiece of a refracting telescope (see Fig. 34.

The eyepiece of a refracting telescope (see Fig. 34.53) has a focal length of 9.00 cm. The distance between objective and eyepiece is 1.20 m, and the final image is at infinity. What is the angular ma...

Q: A reflecting telescope (Fig. E34.63) is to

A reflecting telescope (Fig. E34.63) is to be made by using a spherical mirror with a radius of curvature of 1.30 m and an eyepiece with a focal length of 1.10 cm. The final image is at infinity. a....

Q: a. Through what potential difference does an electron have to be

a. Through what potential difference does an electron have to be accelerated, starting from rest, to achieve a speed of 0.980c? b. What is the kinetic energy of the electron at this speed? Express yo...

Q: A spacecraft of the Trade Federation flies past the planet Coruscant at

A spacecraft of the Trade Federation flies past the planet Coruscant at a speed of 0.600c. A scientist on Coruscant measures the length of the moving spacecraft to be 74.0 m. The spacecraft later land...

Q: Where must you place an object in front of a concave mirror

Where must you place an object in front of a concave mirror with radius R so that the image is erect and 2 1 2 times the size of the object? Where is the image?

Q: A concave mirror is to form an image of the filament of

A concave mirror is to form an image of the filament of a headlight lamp on a screen 8.00 m from the mirror. The filament is 6.00 mm tall, and the image is to be 24.0 cm tall. a. How far in front of...

Q: A light bulb is 3.00 m from a wall.

A light bulb is 3.00 m from a wall. You are to use a concave mirror to project an image of the bulb on the wall, with the image 3.50 times the size of the object. How far should the mirror be from the...