The answer is B, because all energy is released at once in static electricity.

There’s a quizlet that mentions these questions, if you are having trouble. I’d suggest to give them a look.

3 0

3 years ago

Acceleration is defined as

zalisa [80]

Acceleration is the rate of change of velocity per unit of time.

7 0

3 years ago

Read 2 more answers

A truck is traveling on a level road. The driver suddenly applies the brakes, causing the truck to decelerate by an amount g/2.

adoni [48]

Answer:

Truck $\dfrac{g}{10}$

Road $-\dfrac{g}{10}$

Explanation:

$a_1$ = Acceleration of truck = $-\dfrac{g}{2}$

$\mu$ = Coefficient of friction = $\dfrac{2}{5}$

Frictional force is given by

$f=-\mu mg\\\Rightarrow f=-\dfrac{2}{5}mg\\\Rightarrow ma_2=-\dfrac{2}{5}mg\\\Rightarrow a_2=-\dfrac{2}{5}g$

Net acceleration is given by

$a=a_2-a_1\\\Rightarrow a=-\dfrac{2}{5}g+\dfrac{g}{2}\\\Rightarrow a=\dfrac{g}{10}$

The acceleration of the box relative to the truck is $\dfrac{g}{10}$ and $-\dfrac{g}{10}$ relative to the road.

4 0

3 years ago

A tree branch is floating in water. The total volume of the branch is 1.12 m3 and 75.0 percent of the volume is submerged. The d

Neko [114]

The buoyant force on the branch is given by:
F = pVg
F = buoyant force, p = water density, V = volume of branch submerged, g = gravitational acceleration

Given values:
p = 1000kg/m^3
V = 0.75x1.12m^3 (75% of total volume)
g = 9.81m/s^2

Plug in and solve for F:
F = 1000(0.75x1.12)(9.81)

F = 8240N

5 0

3 years ago