A white dwarf is __ a brown dwarf that has exhausted its fuel for nuclear fusion an early stage of a neutron star a precursor to a black hole what most stars become when they die

What is one way radio waves are used? A to carry signals for televisions B to kill germs in hospitals III to treat cancer with radiotherapy

When the north pole of a bar magnet is moved into a solenoid, the needle on a galvanometer attached to the solenoid moves to the left, indicating that a current is produced. The magnet is then pulled out at a faster speed. What will be the result? a larger current in the same direction a larger current in the opposite direction a smaller current in the same direction a smaller current in the opposite direction

According to Galileo, a rolled ball eventually comes to a stop because it seeks its natural state of rest. of inertia. C of friction. all of the above

All the stars pass through this process Nuclear fusion Planetary nebulae Black dwarf

Which statements best characterize conductors?Check all that apply. D Conductors allow electricity to easily move through them. Glass is an example of a conductor. Metal is an example of a conductor. Conductors do not allow electricity to easily move through them. Conductors' restrict the flow of thermal energy.

In which of the following is positive work done by a person on a suitcase? The person holds a heavy suitcase. The person lifts a heavy suitcase The person stands on a moving walkway carrying a heavy suitcase All of the answers None of the answers

During an ultrasound, sound waves are sent by a transducer through muscle tissue at a speed of $1,300m/s.$ Some of the sound waves are reflected from a metal fragment 5.0 cm into the muscle tissue. How long did it take the transducer to detect the reflected waves from the metal fragment after they were first emitted? (4 points) 0.26 seconds 39 seconds 4.6 E-5 seconds 7.7E-5 seconds

A 30 cm long organ pipe is filled with air and is open at one end and closed at the other. The speed of sound in air at $0^{\circ }C$ is $331m/s$ What is the wavelength of the third mode of vibration? Multiple Choice 30 cm 36 cm 24 cm 12 cm 48 cm

Which of the following contains energy? A chemical bond A neutron A nucleus An atom

1. Our galaxy has a radius of 52,850 light years. A neighboring galaxy, Andromeda, has a radius of 110,000 light years. How much larger is the Andromeda galaxy's radius compared to the radius of our galaxy? $5.8135\times 10^{9}$ light years $5.7150\times 10^{4}$ light years $1.62850\times 10^{5}$ light years $2.08\times 10^{7}$ light years.