For a particle undergoing free-fall acceleration, the acceleration vs. time graph is

1. How many grams of sodium hydroxide (NaOH) will dissolve in 100 g of water at 15°C?

Which of these changes do not involve forming or breaking chemical bonds? A) burning and melting B) rusting and cutting C) burning and digestion D) boiling and melting

A 0.28 kg piece of glass is heated from 303 K to 333 K. How much heat had to be transferred to the glass? (specific heat to glass = 664 J/kg K)

A motor must lift a 1500-kg elevator cab. The cab's maximum occupant capacity is 400 kg, and its constant "cruising" speed is 1.3 m/s. The design criterion is that the cab must achieve this speed within 2.

A 0.45-kilogram football traveling at a speed of 22 meters per second is caught by an 84-kilogram stationary receiver. if the football comes to rest in the receiver's arms, the magnitude of the impulse imparted to the receiver by the ball is

A potter's wheel of radius 16 cm starts from rest and rotates with constant angular acceleration until at the end of 32 s it is moving with angular velocity of 10 rad/s. what is the angular acceleration? answer in units of rad/s 2.

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0∘ above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm above the level ground.

Design an experiment (Fair Test) to find out what would be a good insulator for a dog house.

Which of these changes does a submarine encounter as it returns from the bottom of the ocean to the surface of the ocean? a. the amount of sunlight increases. b. the water temperature decreases. c. the amount of plants decreases. d.

Why do some elements have symbols that don't use letters in the element's name?