Answer:
Send a pic of it so i can mark it.
Explanation:
Answer:
O I'm a goofy goober yeah you're a goofy goober yeah we're all goofy goobers yeah goofy goofy goobers yeah
Explanation:
Answer:
m = 7000 - 500 = 6500 g
ρ = m/v = 6500 gm / 500 cm³ = 1.3 g/cm³
The paint brush floats because its density is less than that of the paint and has displaced its weight in the paint.
Explanation:
Answer: This is due to the Magnus Effect
Explanation: "Which is the force exerted on a rapidly spinning cylinder or sphere moving through air or another fluid in a direction at an angle to the axis of spin. This force is responsible for the swerving of balls when hit or thrown with spin."
Answer:
.
Explanation:
Refer to the velocity-time diagram attached. The displacement of an object over a period of time is equal to the area of the region between the velocity-time plot and the horizontal time axis. That is the case even if the velocity of the object is changing over time.
For the car in this question, the distance travelled in that two seconds should be equal to the trapezoid highlighted in green. That's the region bounded with:
- on the top: the velocity-time function of this car,
- on the two sides: the start and end of the acceleration ( and ,) as well as
- on the bottom: the horizontal time axis.
The formula for the area of a trapezoid is:
.
For the imaginary trapezoid on this velocity-time graph:
- Height: .
- Upper base and lower base: and .
Therefore:
.