What is a pulsar?

a. the remains of a low-mass star after it explodes

b. a spinning neutron star emitted radio waves

c. another name for a protostar

d. the stage before a dying star becomes a supernova

In an experiment, a researcher can make claims about causation

50 meters In 3 seconds, what is the average speed (velocity)

What specialist does a person with abdominal pain see?

are 1.8 mm apart is illuminated by a monochromatic coherent light source. A fringe pattern is observed on a screen 4.8 m from the slits. If there are 5.0 bright fringes/cm on the screen, what is the wavelength of the monochromatic light

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. T or F

Which have a positive charge? neutrons atoms protons electrons

Now that we know the velocity of the cart before the collision is 1.80m/s, let's use this to determine the linear momentum and kinetic energy of the disk-cart system before the collision. The mass of the cart is 23.5kg. The mass of the disk is 11.

A circuit is built based on the circuit diagram shown. A diagram of a closed circuit with a power source on the left labeled 60 V. There are 3 resistors in parallel, separate paths, connected to it labeled 40 Ohms, 50 Ohms and 30 Ohms.

After harvesting their main crops, such as corn and wheat, many farmers plant a second crop called a cover crop. This cover crop grows during the fall and winter and is then plowed over in the spring. What is the main purpose of a cover crop? A.

A light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light wave to change the light wave will