Answer:
He barely makes it but hit his leg on the pool edge.
Explanation:
Using kinematic formula: Δx=
We can plug in delta x, v zero, and acceleration.
delta x = 8 meters, v0 = 0. a = 9.8
8=(1/2)9.8*t^2
Around 1.278 seconds of airtime.
4 * 1.278 = 5.112 meters horizontally assuming no air resistance
That was close!
Answer:
c) All choices listed are definitely true.
Explanation:
a)
- As they are connected in parallel, the voltage drop is equal in all the resistors, by definition of a parallel connection, and equal to the terminal voltage of the battery (assuming that the internal resistance of the battery is negligible).
b)
- Applying Ohm's law to the circuit, we arrive to the following expression:
- Simplifying common terms, we have:
- It can be seen that the equivalent resistance, is less than any of the resistances.
d)
- Due to the charge conservation principle, as the current is made from moving charges, the sum of the currents passing through these resistors is equal to the current passing through the battery (KCL).
Answer:
1 and 3
Explanation:
At the point of hitting the tennis ball by the racquet, the force by the hit is acting on the ball.
Since there is a strong wind, the force exerted by the air will act on the tennis ball as it journeys to the ground in the opponents court.
Also, since the tennis ball undergoes a downward motion before it touches the ground, a downward force of gravity also acts on the ball.
After the tennis ball has left contact with the racquet, the force by the hit ceases to act on the ball since they are no longer in contact. However, <em>the downward force of gravity and the force exerted by the air still act on the tennis ball before it touches the ground. </em>
Therefore, the correct choice is:
1 and 3
Fresh water has a variety of different sources on Earth which includes rivers, lakes, streams, rain water, etc.
One of the fresh water sources is a Lagoon which is a permanent shallow body of water which is separated from the larger water bodies by a natural barrier such as reefs or islands.
Reportedly, almost <u>311 plant species</u> are found to be grown in the Atanasovsko Lake lagoon, out of which the Marsh samphire, reed, vicia and sea wormwood are a few to name.
Hello,
Your answer to this problem is 400/3
Hope this helps!