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1. What is the difference between mass and weight? Does one of these matter more than the other when you are dieting, or are both important? Why?
2. What is frictional force? Name at least two examples from everyday life where friction is important, and explain why
3. Training astronauts for weightlessness is always a challenge for NASA to simulate or for theme park rides to achieve. Name at least one method which can be used to simulate weightlessness and describe in detail the forces involved and how they counteract the force of gravity.
Plot a meter correction graph, showing Ixy - Im on the vertical axis and Im on the horizontal axis - Write a brief conclusion to laboratory session explaining what a potentiometer is useful for.
You are to make four straight-line moves over a flat desert floor,starting at the origin of an xy coordinate system andending at the xy coordinates (-160 m, 36 m).
Blood pressure is normally taken on the upper arm at the level of the heart. Assume, however, that a patient has his arms in a cast so you cannot take his blood pressure in the usual way.
John and Joan walk in opposite directions around a circular path, starting from the same point. How long will it take for them to meet
Draw a free body diagram for the skateboarder at the bottom of the ramp
Converting sunlight to electricity with solar cells has an efficiency of 15%. What is the theoretical maximum efficiency
You sing into a well and find that the well resonates at frequencies of 198 Hz and 234 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode
A balloon ofvolume 2.2 m3 contains argongas at a pressure of 6.3 105 Pa and room temperature (20°C). What is the total internal energy of the gas
Discuss the possible changes of whales' songs as a result of temperature, wave speeds, and etc. How could you distinguish the whales' songs from other songs
Two rigid rods are oriented parallel to each other and to the ground. The rods carry the equal current in the similar direction. Calculate what the current in the rods
A grinder consists of a solid 15 kg disk with a diameter of 57 cm. A when active, the disk rotates at a rate of 83 rad/sec. find the rate of angular acceleration of the disk
An object is placed 68cm from a screen. What is the image's magnification
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