Physics Answers

Engineers at the caramel space institution must determine the net force needed for a rocket achieve an acceleration of 90m m/s/s. if the mass   of the rocket is 35,000kg, how much net force must be the rocket

 develop? 

A 100-g body is attached at the end of a hanging spring constant of 2,000 dynes/cm. It is displaced 10 cm from it's equilibrium position and then released. Calculate the period (T). Find the maximum acceleration of the body. Find the acceleration of the body when it is 5 cm from the equilibrium position

Can water waves be reflected and refracted? Give examples. Does Huygens’s principle apply to water waves? Explain.

Atmospheric haze is due to water droplets or smoke particles (“smog”). Such haze reduces visibility by scattering light, so that the light from distant objects becomes randomized and images become indistinct. Explain why visibility through haze can be improved by wearing red-tinted sunglasses, which filter out blue light

Does it make sense to talk about the polarization of a longitudinal wave, such as a sound wave? Why or why not?

If you look up from underneath toward the surface of the water in your aquarium, you may see an upside-down reflection of your pet fish in the surface of the water. Explain how this can happen.

A beam of light goes from one material into another. On physical grounds, explain why the wavelength changes but the frequency and period do not

Light requires about 8 minutes to travel from the sun to the earth. Is it delayed appreciably by the earth’s atmosphere? Explain

1. What is motion?

2. How is motion affected by mass?

3. What forces affect an object at rest?

4. Enumerate and differentiate Newton's Law of motion and identify the formula used in solving problems for the three Laws. 

What is the force between two protons that are separated by 1.0 mm? The charge of a proton is 1.6 × 10^-19 C.