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Questions in physics

[Answered] A stubborn 150 kg pig sits down and refuses to move. To drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 N. The coefficients of friction between the pig and the ground are [tex]\mu_s = 0.80[/tex] and [tex]\mu_k = 0.50[/tex]. Determine if the farmer can move the pig and calculate the force of friction acting on the pig.

[Answered] What is the loose covering of weathered rock particles and decaying organic matter overlying the bedrock of the Earth's surface?

[Answered] Which does NOT represent one of Koch’s postulates? A. Isolate germs from an infected animal. B. Grow germs in a lab culture. C. Inject germs into a healthy animal. D. Watch to determine how long it takes for the healthy animal to become ill.

[Answered] If you shine red light at a green plant and green light at another green plant, knowing that a plant must absorb light to grow, which plant will grow faster?

[Answered] A 1200 kg car moving at 25 m/s has the brakes applied with a deceleration of 8.0 m/s². How far does the car travel before it stops?

[Answered] A horizontal force of 200 N is applied to a 55 kg cart across a 10 m level surface. If the cart accelerates at [tex]2.0 \, \text{m/s}^2[/tex], what is the work done by the force of friction as it slows the motion of the cart?

[Answered] A person runs off a cliff into a lake below. If the person leaves the cliff with a horizontal velocity of 4 m/s, how far away from the cliff does he land if the cliff is 17 m high?

[Answered] What types of germs are found on hands?

[Answered] Find the weight of a 25 kg table. (Use [tex]g = 10 \, \text{m/s}^2[/tex])

[Answered] Steve went to New Zealand with his parents for a summer vacation. Electrical outlets in New Zealand are 220 volts instead of the 110 volts that Steve is used to. What would Steve need to do before he could use the alarm clock he uses at home?