A 50 kg block is accelerating down a 40° incline. The
coefficient of friction (u) between
the block and the incline is 0.30.
Draw the free body diagram,
label the forces, and calculate
acceleration
1. 10.02 m/s2
2. 8.81 m/s2
3. 3.76 m/s2
4. 5.51 m/s2
5. 6.67 m/s2

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false