Which statement about stars is correct?

F

Star formation begins in a nebula.

G White dwarfs become main-sequence stars when they gain mass.

H

Supergiants are stars that can absorb black holes.

J Main-sequence stars are formed by comets.

Which of the following is NOT a true statement Question 1 options: The are both multicellular (made up of many cells) They are both eukaryotes (more complex cells) They both have chloroplasts and make their own food The both have cell membranes

How do i solve A sound wave has a frequency of 658 Hz in air and a wavelength of 0.46 m. What is the temperature of the air? Assume the velocity of sound at 0◦C is 331 m/s. Answer in units of ◦C

Which of the following best describes what causes the pases of the moon.? The earth casts a shadow on the moon The moon gets in between the sun and the earth The earths tilt on its axis As the moon revolves around the sun, the part of the moon that

In terms of orbit, the Earth Is to the sun as what is to the Earth? A-Mars B-the moon C - A comet D-Venus

How much energy (in joules) is required to evaporate 0.0005 kg of liquid ammonia to vapor at the same temperature?

You slide a box of books at constant speed up a 30° ramp, applying a force of 200 n directed up the slope. the coefficient of sliding friction is 0.18.

Two trains leave the same station at the same time. The first train travels north at 60 mph. The second train travels west at 45 mph. Find how fast the distance between the trains is changing two hours after the trains have left.

If the room radius is 4.5 m, and the rotation frequency is 0.8 revolutions per second when the floor drops out, what is the minimum coefficient of static friction so that the people will not slip down?

Energy of motion is known as what energy

While a constant total force of 17 n is exerted on a cart, the cart's acceleration is 5 m/s2. find the mass of the cart?