Answer:
<h3>The answer is 19.8 g</h3>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume = 6 cm³
density = 3.3 g/cm³
We have
mass = 3.3 × 6
We have the final answer as
<h3>19.8 g</h3>
Hope this helps you
The answer is (2). To calculate the density, you need to divide the mass with volume. When doing division, the significant figures of result is the minimal of the numbers using before. So the answer is 2.
In this question, you are asked the time but given the speed(89beat/min) and the number of beats(3.1 x 10^9). Then the equation would be:
Time= number of beats/ speed
Time = 3.1 x 10^9 beats / (89 beats/min)= 3.483 x 10^7 minutes.
Then convert it to years, disregard of leap years it would be : 3.483 x 10^7 minutes / (60 minutes/hour) / (24 hour/day) / (365 day/year)= 66.26 years
Answer:
All the processes given involves the conversion of potential energy to kinetic energy
Explanation:
The kinetic energy is the energy possessed by an object because of its motion, equal to one half the body's mass times the square of its speed.
i.e
On the other hand, The potential energy is the energy possessed by an object because of its position in a gravitational or electric field, or its condition as a stretched or compressed spring, as a chemical reactant,or by having rest mass.
SO, from both definitions :
Water cascades downward in a waterfall → involves the conversion of potential energy to kinetic energy
A player kicks a football → involves the conversion of potential energy to kinetic energy
An electric current is generated by a chemical reaction in a battery. → involves the conversion of potential energy to kinetic energy
Water boils when heated on a gas stove. → involves the conversion of potential energy to kinetic energy
Answer:
A change which can be reversed