A type of mechanical energy that is possessed by an object in motion. Kinetic energy Gravitational potential energy Strain energy Force energy

How can Bill increase the energy of the bowling ball so that it does swing back and hit him in the nose? Make the string longer. Use a bowling ball with less mass. Lift the bowling ball up

(10 points) You have 125 grams of an isotope that decays at 4.5% per day. a. Write an expression representing the quantity Q(t) at time t in days. b. What is the half-life of the isotope?

How would you compare the magnetic field generated by a simple length of wire to the magnetic field generated by a coil of wire? The coil generates a stronger magnetic field The coil generates a weaker magnetic field The field generated by the coil has a different polarity than the field generated by the length of wire The coil generates a field that attracts iron objects; the length of wire generates a field that attracts silver objects

Radium-223 (_(88)^223Ra) undergoes gamma decay to produce what daughter isotope and decay particle? a (}_{88)^223Ra+gamma b (}_{88)^222Ra+gamma C (}_{86)^220Rn+gamma d (}_{86)^222Rn+gamma

The temperature of a gas is increased. Which statement best explains the effect that this has on the motion of gas particles? The average kinetic energy decreases, and the particles stop colliding The average kinetic energy increases, and the particles stop colliding. The average kinetic energy decreases, and the particles collide less frequently. The average kinetic energy increases, and the particles collide more frequently.

How many nanoseconds are in 7 seconds?? A 7,000,000 B 7,000,000,000 C 7 million D 0.00000007

How does the electrostatio force compare with the strong nuclear force in the nucleus of an atom? A. The electrostatic force is weaker and is only attractive. B. The electrostatic force is weaker and acts over longer distances. C. The electrostatic force is stronger and is only repulsive. D. The electrostatic force is stronger and acts over shorter distances.

Which model best describes how gravity causes star formation? A. A cup of water is dumped on the ground, where it forms a small pool. B. Two mugs crash into each other and break into many small pieces. C. A long spool of thread is unwound and then wound back up. D. A snowball grows as more snow sticks to it.

What type of stuff can be refracted?Choose the best answer. A. Light B. Sound C. Heat D. Anything that travels in waves

Hot Questions

When light is reflected from a smooth, plane mirror Multiple Choice the angle of reflection is the same as the angle of incidence. most of the light is scattered into multiple directions. the light is changed to a lower frequency. the wave characteristics are predominant.

When a light wave approaches a glass-air interface from the glass side at the critical angle, the angle of refraction is . __ $43^{\circ }$ $48^{\circ }$ o $45^{\circ }$

Which of the following will induce a greater emf in the secondary coil of a generator? A constant potential in the primary coil. A greater number of loops in the primary coil. A fewer number of loops in the secondary coil. A smaller area in the secondary coil.

Which of the following is accurate about the Coriolis Effect? The apparent deflection of objects is zero at the equator. The apparent deflection of objects is greatest at the equator. The apparent deflection of objects is the same at all locations on the globe. The apparent deflection of objects is the least at the Poles.

The insulation in walls uses which of the following methods to prevent heat transfer? (select all that apply) A convection B radiation C conduction

Heat that we can feel and is measurable is called: Heat cannot be measured Illogical Latent Sensible

The period of the moon's rotation on its axis is the same as its revolution around the Earth much longer than its revolution around the Earth longer or shorter depending on what part of the year we are in much shorter than its revolution around the Earth

33. What are the two ways that light quality can be characterized? direct or indirect light bright and dim light hard and soft light round and curved light

A soccer player runs up behind a soccer ball (of mass 0.50 kg) that is moving at $3.5m/s$ in the same direction as the player. The soccer player kicks it and the ball moves with a speed of $13.5m/s$ What is the magnitude of the impulse (in $kgm/s)$ delivered to the soccer ball? A 5.0 B 7.5 C 10 D 15

What path can a light ray travel through the glass core of an optical fiber? angle of incidence angle of refraction light coupling mode