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Katen [24]
3 years ago
5

Oil tends to float on water because the density of oil is _____ the density of water.

Physics
1 answer:
Rama09 [41]3 years ago
7 0
Oil is less dense than water so it tends to float on the top of the water. Hope this Helps!
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What value of x is in the solution set of 2(3x – 1) ≥ 4x – 6?
Akimi4 [234]
2(3x - 1) ≥ 4x - 6  Remove the brackets on the left.
6x - 2  ≥ 4x - 6     Subtract 4x from both sides.
6x - 4x - 2 ≥ - 6    combine like terms on the left.
2x - 2 ≥ - 6           Add 2 to both sides
2x ≥ - 6+ 2
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x ≥ - 4/2
x ≥ - 2  answer <<<<<<<<

Check
2(3*-2 - 1) ≥ 4x - 6
2(-6 - 1) ≥ 4(-2) - 6
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- 14 = - 14 and this checks.

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3 years ago
Why is it more helpful to know a tornadoes velocity rather than its speed
victus00 [196]
So you not only know<span> how fast it is going, but where it is going.</span>
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3 years ago
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tatyana61 [14]

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Explanation:

5 0
3 years ago
A ball is thrown down vertically with an initial speed of 20 m/s from a height of 60 m. Find (a) its speed just before it strike
vivado [14]

Answer:

Explanation:

Ball is thrown downward:

initial velocity, u = - 20 m/s (downward)

height, h = - 60 m

Acceleration due to gravity, g = - 9.8 m/s^2 (downward)

(a) Let the speed of the ball as it hits the ground is v.

Use third equation of motion

v^{2}=u^{2}+2as

v^{2}=(-20)^{2}+2\times 9.8 \times 60

v = 39.69 m/s

(b) Let t be the time taken

Use First equation of motion

v = u + a t

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t = 2 second

Now the ball is thrown upwards:

initial velocity, u = 20 m/s (upward)

height, h = - 60 m

Acceleration due to gravity, g = - 9.8 m/s^2 (downward)

(c) Let the speed of the ball as it hits the ground is v.

Use third equation of motion

v^{2}=u^{2}+2as

v^{2}=(-20)^{2}+2\times 9.8 \times 60

v = 39.69 m/s

(d) Let t be the time taken

Use First equation of motion

v = u + a t

- 39.69 = + 20 - 9.8 t

t = 6.09 second

3 0
3 years ago
Two objects were lifted by a machine. One object had a mass of 5000 kg, and was lifted at a speed of 2 m/sec. The other had a ma
Leokris [45]
Equation for ke = 1/2mv^2
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