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Y_Kistochka [10]

3 years ago

13

Tom drives on a highway and never changes his speed for the whole journey. He drives for 300 miles and it takes him 5 hours. Wha

t is Tom's speed on the highway?

1 answer:

Nata [24]3 years ago

6 0

Answer:

QESARDFRGTSRTATFREVERSRvrvqwqv

Explanation:

vfqfvcafbraf w rfdsd AEWvd a

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What is the net force acting on this box?

inn [45]

Positive 2n to the right of the box

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3 years ago

A cell is _______ if it lacks a nucleus and membrane-bound organelles.

GREYUIT [131]

B. prokaryotic because prokaryotic cells lack a nucleus and membrane-bound structures.

7 0

3 years ago

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A ball is dropped from a height of 10 meters how long was the ball in the air and what is the speed when it hits the ground

Burka [1]

4 Because it will go fast

6 0

3 years ago

A worker is pushing a crate of tools up a ramp into a truck. The crate has a mass of 120 kg and is accelerating at a rate of 1.0

jolli1 [7]

Answer:

B) 0.493

Explanation:

First Crate

Formula: F=ma

120kg*1.05m/s^2= 126N

Second Crate

Formula: F=ma

3*120kg=360kg

360kg*0.71m/s^2=255.6

Find the ratio by dividing

120kg/255.6kg=0.4929

Round 0.4929=0.493

Hope this Helps!!

8 0

3 years ago

The maximum displacement of an oscillatory motion is A=0.49m. Determine the position x at which the kinetic energy of the partic

Tatiana [17]

Answer:

The position x, is ± 0.4 m.

Explanation:

The total mechanical energy of the oscillatory motion is given as;

$E_T = U +K.E\\\\E_T = \frac{1}{2} kA^2\\\\ \frac{1}{2} kA^2 = U +K.E\\\\K.E = \frac{1}{2} kA^2 - U ----equation(1)$

When the kinetic energy (E) is half of the elastic potential energy (U);

$K.E = \frac{U}{2} ----equation(2)$

Equate (1) and (2)

$\frac{U}{2} = \frac{1}{2} kA^2 - U\\\\U = kA^2 -2U\\\\U+2U = kA^2\\\\3 U = kA^2\\\\3(\frac{1}{2} kx^2) = kA^2\\\\\frac{3}{2} x^2=A^2\\\\x^2 = \frac{2}{3} A^2\\\\x = \sqrt{\frac{2}{3} A^2} \\\\x = A\sqrt{\frac{2}{3} } \\\\x = 0.49\sqrt{\frac{2}{3} }\\\\x = + /- (0.4 \ m)$

Thus, the position x, is ± 0.4 m.

8 0

4 years ago