A steel bucket contains 4 liters of water at 12C. An electric immersion heater rated at 1400 Watts is placed in the bucket. Determine how long it will take for water to heat to 70C. Assume that the empty bucket weighs 1.1 kg. The specifi c heat of steel is 0.46 kJ/(kgC). Use an average specifi c heat of water of 4.18 kJ/(kgC). Disregard any heat loss to the surroundings.

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.

What is a good example of instantaneous speed