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Questions in physics

📝 Answered - Explain why dogs pant during hot summer days using the concept of evaporation.

📝 Answered - A person walks out of a store with a pillow at the top of an overflowing shopping cart. While walking to the car, the cart's wheel hits a large rock, causing the cart to suddenly stop. Which of the following is likely to happen as a result of Newton's first law of motion? A. The pillow will fall off the cart. B. The cart will move backwards. C. The person will stumble forward. D. The cart will tip over.

📝 Answered - What actions did Japan take in an attempt to recover from the Great Depression?

📝 Answered - Which plate is covering most of two continents? What are the two continents?

📝 Answered - Explain why ultra-high voltages are used to carry electricity over transmission lines.

📝 Answered - A 15 cm\(^3\) block of gold weighs 2.8 N. It is carefully submerged in a tank of mercury. One cm\(^3\) of mercury weighs 0.13 N. a. Will the mercury be displaced by the gold? b. Will the gold sink or float in the mercury?

📝 Answered - Explain why Mercury, Venus, and Mars are not likely to support life as we know it.

📝 Answered - You "measure" or "observe" two events to occur at the same time, one nearby and one further away. Which one did you actually see first? A. Both at the same time. B. The closer one. C. The farther-away one.

📝 Answered - Susan works 8 hours a day and makes $7.00 per hour. How much money does Susan earn in one week if she works 5 days per week?

📝 Answered - You're conducting a physics experiment on another planet. You drop a rock from a height of 2.3 m and it hits the ground 1.1 seconds later. What is the acceleration due to gravity on this planet? A. 4.2 m/s\(^2\) B. 3.8 m/s\(^2\) C. 2.4 m/s\(^2\) D. 9.8 m/s\(^2\)