Answer:
A rocket with more mass will speed up more slowly, just as in the horizontal example, but there is another effect. The force of gravity is now acting in the opposite direction to the thrust, so the resultant force pushing the rocket upwards is also less.
Explanation:
Answer:
Gravitational potential energy
Explanation:
Gravitational potential energy is the type of energy an object has due to its position in a gravitational field. Water behind a dam possesses gravitational potential energy due to it being at a higher level than the water on the other side of the dam. When the water falls the gravitational potential energy is converted to kinetic energy, leading to the turning of the turbines to generate electricity.
<h3><u>Answer</u>;</h3>
A) 84 calories
<h3><u>Explanation</u>;</h3>
- Specific Heat Capacity is the energy, transferred as heat, that is required to raise the temperature of one gram of a substance by one degree Celsius.
- Quantity of heat = mcΔt; Where m is the mass in kilograms, c is the specific heat capacity and Δt is the change in temperature.
<em>Mass = 10 g, specific heat capacity = 0.21 cal g°C, and Δt = 10 °C</em>
<em>Therefore;</em>
<em>Heat = 10 × 0.21 cal g°C × 40 °C</em>
<em> = </em><u><em>84 calories</em></u><em> </em>
The answer to the first one is sublimation.
Answer;
An endothermic reaction is occurring.
Explanation;
-An endothermic reaction describes the process or reaction in which the system absorbs energy from its surroundings, usually in the form of heat.
-It occurs when the energy used to break the bonds in the reactants is greater than the energy given out when bonds are formed in the products. This means that overall the reaction takes in energy, therefore there is a temperature decrease in the surroundings.
-The opposite of endothermic reaction is called exothermic reaction where heat released is more than what is required to the surroundings in form of heat.