- A ______quantity can be expressed by a number and a unit.
- Weight is a ______quantity because it ______.
- A small plane is flying east with a velocity of 155 km/h. The wind is blowing toward the east at a velocity of 35 km/h. An observer on the ground would measure the velocity of the plane to be...
- If the values of "c" and "θ" are known, the value of side "b" can be determined using...
- Which of these statements about acceleration is not true?
- Draw a hill where the ball will roll down with increasing velocity but decreasing acceleration?
- When an object’s motion is uniform, its...
- The slopes of the lines in Graph I represent...
- In which section is the car moving uniformly?
- The best measure of an object's inertia is its...
- A steel ball weighing 22 N hangs motionless from a string attached to the ceiling. The net force acting on the ball is...
- In projectile motion problems, the variable that both parts of the motion always have common is...
- Which of these is not necessary in stating Newton’s 2nd Law?
- These three forces act on an object:24 newtons, W; 12 newtons, N; 24 newtons, E
The equilibrant force for this situation is...
- When an object is in a state of equilibrium...
- The length of vector “c” represents...
- In the diagram at right, which vector represents the normal force exerted on the box?
- If the box is moving uniformly from left to right, which vector represents the force of friction?
- When the mass of an object is doubled, the velocity is doubled and the radius of the circle is cut in
half, the centripetal force required to keep the object in circular motion is...
- The centripetal force causing cars to turn in a curve is furnished by...
- The illustration shows a ball swinging freely in a plane. The mass of the ball is 4.0 kg. Ignoring friction, what is the maximum kinetic energy of the ball as it swings back and forth?
- The illustration below shows a ball on a curved track. The ball starts with zero velocity at the top of the track. It then rolls from the top of the track to the horizontal part at the ground. Ignoring friction, its velocity just at the moment it reaches the ground is 14 m/s. What is the height, h, from the ground to the top of the track?
- In the diagram below, which ammeter reading will be different from the others?
- In the diagram at right, which voltmeter is positioned incorrectly?
- A generator
- Which of these quantities is more dangerous to the average adult?
- The potential difference across the branches of the circuit adds up to the voltage supplied by the battery in a:
- The resistance of a wire increases as the
- Conventional current flows from -
- The current is the same in all parts of the circuit.