A helicopter and a jet airplane must work against gravity in order to fly. Which one flys faster

Physics

1 answer:

Gre4nikov [31]3 years ago

3 0

Im pretty sure the jet airplane is faster

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An object is projected horizontally at 18.4 m/s from the top of a 162.7 meter cliff.

miskamm [114]

Answer:

106.03 meters

Explanation:

The height is given by the formula for motion under the influence of gravity.

h = -4.9t^2 +162.7

Height is 0 when ...

0 = -4.9t^2 +162.7

4.9t^2 = 162.7

t^2 = 162.7/4.9

t = √(162.7/4.9)

The horizontal distance traveled in that time is ...

(18.4 m/s)√(162.7/4.9) s ≈ 106.03 m

The object will strike the ground about 106.03 meters from the base of the cliff.

5 0

2 years ago

A 7.99 g sample of hcn is found to contain 0.296 g of h and 4.14 g of n.Find the mass of carbon in a sample of hcn with a mass o

Thepotemich [5.8K]

Answer:

Mass of C in 3.40 g of HCN =1.51 gram.

Explanation:

Mass of sample of HCN = 7.99 g

Mass of H in 7.99 g of HCN = 0.296 g

Mass of N in 7.99 g of HCN = 4.14 g

Mass of C in 7.99 g of HCN = (7.99-0.296-4.14) = 3.554 g

Now mass of HCN = 3.40 g

Mass of C in 3.40 g of HCN = $\frac{3.554}{7.99} *3.40 =1.51 g$

So mass of C in 3.40 g of HCN =1.51 gram.

3 0

3 years ago

Give an example of how a cell’s structure relates to its function in the body.

kenny6666 [7]

Answer:

The epithelial cell shape and stratification are related to its function. For example, the skin is specialized to act as a "physical" barrier to the outside world. This barrier is both structural (multi-layered) and chemical in nature. Another example is the cells that make up the tubular elements of the kidney.

Explanation:

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3 years ago

Cart 1 has a mass of 1 kg. Cart 2 has a mass of 2 kg. They are pushed apart by a spring. The spring exerts 2N of force into cart

almond37 [142]

The force exerted on the cart 2 during the collision is 2 N.

The given parameters:

Mass of cart 1 = m1 = 1 kg
Mass of cart 2 = m2 = 2kg
Force applied on cart 1 = 2 N

According to Newton's third law of motion, action and reaction are equal and opposite. The force exerted on cart 1 is equal in magnitude to the force exerted on cart 2 but in opposite direction.

$F_1 = -F_2$