Plants exhibit phototropism because _____.

1 answer:

5 0

They need the suns energy in order to produce food.

Shoots of plants exhibit positive phototropism, which is where it grows towards the light, and this is so it can get light in order to photosynthesise.

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A ball is thrown horizontally at 20 m/s from the top of a cliff 50 meters high. how far from the base of the cliff does the ball

Oksanka [162]

You need to divide the motion into its component: vertical and horizontal motion.

The time taken to fall vertically from the cliff is equal to the time taken to move horizontally.

Using the vertical component, which is an accelerated motion with an initial velocity equal to zero, we can solve for t:
h = 1/2 · g · t²

t = √(2·h / g)
= √(2·50 / 9.8)
= 3.2 s

Horizontally, it is a constant motion:
d = v · t
= 20 · 3.2
= 64 m

The ball will strike the ground at a distance of 64 meters from the cliff.

6 0

3 years ago

With a force of 5 newtons, Amanda pushes the stack of books to the right. At the same time, Jeremy, her little brother, pushes t

Vaselesa [24]

Its letter C. 5N to the left. Since Jeremy's force in Newtons are higher than Amanda's (in newtons), and since Jeremy's force directs to the left, then the direction of the force will be to the LEFT. Then subtract the higher one to the lower one so that would be: 10N-5N=5N. So it is C. 5N to the left.

5 0

3 years ago

Read 2 more answers

A 12.0kg microwave oven is pushed 14.0m up the sloping surface of a loading ramp inclined at an angle 37 degrees above the horiz

Semenov [28]

Answer:

Answered

Explanation:

a) What is the work done on the oven by the force F?

W = F * x

W = 120 N * (14.0 cos(37))

<<<< (x component)