Which happens to the magnetic field of a wire when you change the direction of the current in the wire? It becomes stronger. It becomes weaker. It changes direction too. It stays the same.

Does the average speed depend on direction

After a supernova explosion the core of a star may become a? A. Red supergiant B. Neutron star C. Black hole D. neither a neuron star or a black hole.

How does the electric force between two charged particles change if one particle's charge is increased by a factor of 2? A. It is increased by a factor of 2. B. It is decreased by a factor of 2. C. It is decreased by a factor of 4. D.

In only 15 minutes, the temperature in Fort Assiniboine, Montana, went from - 5°F to + 37°F on January 19, 1892. Calculate this change in temperature in kelvins.

Which describes Ernest Rutherford's experiment? 1. Positive particles are fired at gold foil. Most bounce back, but some pass through. 2. Negative particles are fired at gold foil. Most bounce back, but some pass through. 3.

What are the characteristics of air pressure waves that we hear as sound?

Calculate how much work you need to move a 280 N shed to a platform 5 m above. A 2,800 J B. 1,400 J* C. 56 J

Forces of attraction limit the motion of particles most in

What is the temperature of the center of the earth?

A certain string has a mass of 120 g and a length of 40 cm. Consider the quantity 3 = 120/40. 1. Give the name of the quantity if there is one. 2. What is the interpretation of the quantity in this context? 3.