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If a transformer doubles its input voltage, what is the current in the secondary coil if the primary coil is 10 A.

If a magnet is broken into two pieces, what happens to the magnetic poles? Neither piece will have any magnetic poles. Both pieces will have the same, singular pole. Each piece will have a north pole and a south pole.

Suppose that the displacement of an object is related to time according to the expression x = Bt². What are the dimensions of B? a. L/T b. T/L c. T/L²d. L/T²e. T²/L f. L²/T²

In a certain region of space, the electric field is zero. From this fact, what can you conclude about the electric potential in this region? (a) It is zero. (b) It does not vary with position. (c) It is positive. (d) It is negative.

Are causes of mechanical weathering three options Acid rain Plant growth Animal action Corbin dioxide Pressure release

An archer defending a castle is on a 15.5 m high wall. He shoots an arrow straight down at 22.8 m/s. How much time does it take to reach the ground?

Four potential forces can act on the ball Which combination of forces will keep the ball in static equilibrium? The length of the arrows represents the magnitude of the force A and B A and C B and D 8. Cand D Submit Force, Mass, and Motion

The resultant of a 50N force acting on an object to the right and a 20N force acting on the object to the left is what

A student conducts and investigation to determine a ball's mass, displacement, velocity and acceleration. (A) Identify each of the following as wither a vector or scalar quantity: Mass, Displacement, Velocity & Acceleration.

A ball is rolling down a hill at + 1.0 m/s, The ball is uniformly accelerating at +4.9 m/s?, What will the ball's velocity be 4.0 s later? +8.9 x 100° m/s +2.0 x 10^1 m/s +2.1 x 10^1 m/s -1.9 x 10^1 m/s