a 250 g block of ice is removed from the refrigerator at -8.0°C. how much thermal energy does the ice absorb as it warms to room temperature (22°C)? (the heat of fusion of water is 334) (specific heat of ice is 2.05 joules/gram) (specific heat of water is 4.184 joules/gram)

Apendulum has a mass of 1.5 kg and starts at a height of 0.4 m. if it is released from rest, how fast is it going when it reaches the lowest point of its path? acceleration due to gravity is g = 9.8 m/s2. a. 2.8 m/s b. 0 m/s c. 5.9 m/s d. 4.3 m/s

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?