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3 years ago

Why do the passengers on a high-flying airplane not appear weightless, similar to the astronauts on the space station?

1 answer:

4 0

<span>Even in space, there is still presence of gravity. The cause of weightlessness is not how far above the earth the space shuttle is but rather how fast it is travelling. The shuttle is in free fall causing weightlessness, but it is travelling fast enough to miss the earth as it falls. Similarly, the airplane could also provide weightlessness if it went free fall as well. However, that ends as the plane hits the ground. </span>

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8. Where are the ribosomes usually located in plant and animal cells?

professor190 [17]

Answer:

Ribosomes are found 'free' in the cytoplasm or bound to the endoplasmic reticulum (ER) to form rough ER.

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3 years ago

Test your prediction through calculation for the situations of the clay bob and the bouncy ball. Assume each has a mass of 100 g

melamori03 [73]

Answer:

a) Δp = -2.0 kgm / s, b) Δp = -4 kg m / s

Explanation:

In this exercise the change in moment of a ball is asked in two different cases

a) clay ball, in this case the ball sticks to the door and we have an inelastic collision where the final velocity of the ball is zero

Δp = p_f - p₀

Δp = 0 - m v₀

Δp = - 0.100 20

Δp = -2.0 kgm / s

b) in this case we have a bouncing ball, this is an elastic collision, as the gate is fixed it can be considered an object of infinite mass, therefore the final speed of the ball has the same modulus of the initial velocity, but address would count

v_f = - v₀

Δp = p_f -p₀

Δp = m v_f - m v₀

Δp = m (v_f -v₀)

Δp = 0.100 (-20 - 20)

Δp = -4 kg m / s

6 0

2 years ago

What state of matter has a define volume but no definite shape ?

mariarad [96]

Liquid has no definite volume or shape.

6 0

2 years ago

Read 2 more answers

You're caught running a red light on Hwy 316. Attempting to impress the skeptical patrol officer with your physics knowledge, yo

timurjin [86]

Answer:

Explanation:

We shall apply here Doppler's effect in optics . The formula is as follows

$\frac{\triangle\lambda }{\lambda } = \frac{v}{c}$

Δλ is change in wavelength , λ is original wavelength , v is velocity and c is velocity of light

Δλ = 685 - 590 = 95 nm

λ = 685

95 / 685 = v / 3 x 10⁸

v = .416 x 10⁸ m / s

= 4.16 x 10⁷ m /s

3 0

2 years ago

Why can't 41 be represented in a binary table?

Airida [17]

Answer:

I think it is but I don't know for sure

Explanation:

41 101001

41 is 101001 on the binary table i think

8 0

2 years ago