Physics Homework Aid

Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.

QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.

What happens to water when it freezes? Its mass increases. Its mass decreases. Its density increases. Its density decreases.

Question 1 (25 points) Mike the Georgia State Patrolman is the first to respond to a vehicle accident where a driver hit a deer. After making sure no one is seriously injured, he assesses the situation. If the skid marks are 76 feet long and Mike assumes the drag factor is 0.8, what is the minimum speed Mike knows the driver was going when he hit the brakes? a) 42.7 mph b) 32.8 mph c) 46.4 mph d) 37.9 mph

The pressure applied to a leverage bar varies inversely as the distance from the object. If 150 pounds is required for a distance of 10 inches from the object, how much pressure is needed for a distance of 3 inches? 450 pounds 500 pounds 45 pounds 5 pounds

The diagram shows a ball resting at the top of a hill. Which statement best describes the energy in this system? The potential energy in the system is greatest at X. The kinetic energy in the system is greatest at X Total energy in the system decreases as the ball moves from X to Y. Total energy in the system increases as the ball moves from X to Y.

A car is moving at 12m/s and has a mass of 600 kg. What is the kinetic energy of the car? (Formula: KE=(1)/(2)mv^2) 36,300 J 43,200 J 72,600 J 86,400 J