Answer:
30.24m
Explanation:
When adding numbers together, we round to the smallest number of decimal places of the numbers, which is 2 decimal places in this case.
24.686m + 2.343m + 3.21m = 30.23<u>9</u> m
≈ 30.24m (round to 2 d.p.)
When you round numbers to a certain digit (hundredth in this case), you would want to look on the digit on its right (thousandth in this case). If that digit is 1-4, you round the digit down. If that digit is 5-9, you round the digit up. Since the digit in the thousandths place is 9, you round the hundredth digit up from 3 to 4.
Answer:
decreases
Explanation:
Energy in a resistor= I²R
According to ohms law, V=IR
Inititally current through both the resistors is same. When resistance of variable resistor is decreased, current through it increases and less current flows through fixed resistor. Consequently energy dissipated in fixed resistor also decreases.
Answer:
C
Explanation:
friction causes increase of thermal energy, the remainder becomes kinetic energy.
Answer:
towards the right.
towards the right.
Explanation:
Let be placed at origin so becomes negative and becomes positive
Electric field is given by
The electric field halfway between the points is towards the right.
The electric field halfway between the points is towards the right.