Answer:
A-Caclcuate the potential energy of the ball at that height
Explanation:
(a). Mass of the Body = 10 kg.
Height = 10 m.
Acceleration due to gravity = 9.8 m/s².
Using the Formula,Potential Energy = mgh
= 10 × 9.8 × 10 = 980 J.
(b). Now, By the law of the conservation of the Energy, Total amount of the energy of the system remains constant.
∴ Kinetic Energy before the body reaches the ground is equal to the Potential Energy at the height of 10 m.
∴ Kinetic Energy = 980 J.
(c). Kinetic Energy = 980 J.
Mass of the ball = 10 kg.
∵ K.E. = 1/2 × mv²
∴ 980 = 1/2 × 10 × v²
∴ v² = 980/5
⇒ v² = 196
∴ v = 14 m/s.
<span>One thousand grams of seawater has 35 grams of dissolved substances ... on the average. While the salinity of the Earth's oceans and seas varies, the average salinity of seawater rests at 3.5%. Consider one liter or sea or ocean water. One liter has 1,000 milliliters (mL) in it. To find 3.5% of 1,000, we would multiply with the decimal place adjusted for percentages: 1000 x .035 = 35. Therefore, for every 1,000 mL of seawater, we will find 35 grams of (mostly) sodium chloride, otherwise known as salt.</span>
Explanation:
1) Kicking a ball.
2) Capture the ball by hand.
3) Push a car.
The scientist used obligatory assets to measure the distance of the different waters
Answer:
North Hemisphere
Explanation:
It is called "Cancer" because in ancient times when the summer solstice was held in the Northern Hemisphere, the sun was in the constellation of cancer; although this is currently in the constellation of Gemini, near the edge that separates it from Taurus.
This parallel is currently located at a latitude of 23 ° 26'16 "north of Ecuador and travels at a rate of almost half a second per year to the south.
This imaginary line delimits the northernmost points where the sun shines, something that happens between June 20 and 21 every year, this is called the June solstice.
