Answer:
78.156 m/s
Explanation:
(assuming no upthrust from the air on the arrow)
Ball has a motion only under ther gravity
Apply motion equation upwards
(g = 10m/s²)
V² = U² + 2as
= 82.5² + 2*(-10)*(36.3-1.41.)
= 6108.45
V = 78.156 m/s
Answer:
Explained
Explanation:
Given:
Ship travels due east from the Bar Harbor 38 miles before turning north
Yes it possible to calculate the exact direction of the ship by assuming there are no large islands in the way, and that the isolated ship does not cut off very far, then what we have here is a right triangle with a 72-mile as hypotenuse and a 38-mile as "adjacent" side. If θ is the angle out of Bar Harbor, we can write
, and θ = 58.14457°, or 58° 8' 40" north of east. That will be the exact direction.
Given: Force=8000N
displacement= 15 m
W=denotes Work
W= f × d
Substitute Values:
W = 8000 N × 15 m
= 120, 000 Nm
So, the elevator is doing 120, 000 Joule.
( Joule is the SI unit of work)
Answer:
The density of the mercury is 13.2 g/cm³
Explanation:
Density is a measurement that compares the amount of matter an object
has to its volume
Density is equal to mass divided by volume
We need to find the density of mercury if 500 cm³ has a mass of
6.60 kg in g/cm
We must to change The kilogram to grams
The mass of mercury is 6.60 kilograms
1 kilogram = 1000 grams
6.60 kilograms = 6.60 × 1000 = 6600 grams
Density = mass ÷ volume
The volume of the mercury is 500 cm³
The density = 6600 ÷ 500
The density = 13.2 g/cm³
<em>The density of the mercury is 13.2 g/cm³ </em>
After the remains of living organisms (plants and animals) were buried under the layers of the earth's crust, they were exposed to very high temperatures and pressures, which led to the concentration of carbon in it and thus turning it into fossil fuels used to produce fossil energy.
The composition of fossil fuels depends on the carbon cycle in nature, and is extracted from fossil materials such as coal, black petroleum coal, natural gas, and petroleum.
I hope it helped you^_^