The object in this diagram has a mass of 2 kg According to this diagram, what is the acceleration of this object? 0 m/s2
4 m/s2
7 m/s2
11 m/s2

Aball bearing at 220.0 °c is dropped into a cup containing 250.0 g of water at 20.0 °c. the water and ball bearing come to a temperature of 30.0 °c. what is the heat capacity of the ball bearing in j/°c? (hint: how are the algebraic signs of q related for the ball bearing and the water? )

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?