3 Which of the following is not likely to be evidence of a chemical change?

A. a form of matter changes state

B. a substance emits beat and light

C. carbon dioxide, water, and ash are produced

D. the matter shows signs of rusting

If the earth excrets a force of 2100 N on an orbiting comm. Satellite that is 38 miles above the earth what is the magnitude force the satellite will excert on the earth

A charged particle is launched with a velocity of 5.2 * 10^4 m/s at an angle of 35° with respect to a 0.0045-t magnetic field. if the magnetic field exerts a force of 0.0026 n on the particle, determine the magnitude of the charge on the particle.

Com que rapidez estará sendo feito trabalho elétrico num resistor de 10 ohms, percorrido por uma corrente elétrica de 5 A? Qual a energia gasta no mesmo em 2 horas?

What is a solution? A. A solute layered on solvent. B. A solute dissolved in solvent. C. A solvent layered on a solute. D. A solvent dissolved in a solute.

how much chemical energy must be supplied to a car engine if we want it to produce 5000J of kinetic energy and it is 45% efficient

A ball is dropped from an initial height and allowed to bounce repeatedly. On the first bounce (one up-and-down motion), the ball reaches a height of 32 inches. On each successive bounce, the ball reaches 75% of its previous height.

An inductor with an inductance of 3.50 H and a resistance of 8.00 Ω is connected to the terminals of a battery with an emf of 4.00 V and negligible internal resistance.

An example of a decomposition reaction is A. AB>A+B B. AX+B>A+BX C. A+B>AB D. AX+BY>AY+BX

An example of sunlight passing through clouds during sunset, results in what is often called the cloud's silver lining. Pastel shades of blue, pink, purple, and green can be observed at times of cloud cover.

An observer on Earth measures the length of a spacecraft travelling at a speed of 0.700c to be 78.0 m long. Determine the proper length of the spacecraft.