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3 years ago

13

Which object will be the easiest for a magnet to pull? a 1-gram piece of paper, a 2-gram eraser, a 3-gram steel paper clip, a 4-

gram iron nail

1 answer:

Vlad1618 [11]3 years ago

6 0

Steel paper clip because it can be moved by the magnet and it is lighter than the iron nail

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What would happen if an Asteroid hit earth?

svp [43]

Answer:

There would be tremendous earthquakes and tsunamis, followed by massive volcanism around the impact zone. The ozone layer would be destroyed. The oceans would turn acidic. The Sun would be blotted out, probably for decades.

Explanation:

Hope this helps!

4 0

3 years ago

Read 2 more answers

As a summer intern assigned to the Olympics Kayaking committee, you need to determine the speed of water flowing through a rapid

Nookie1986 [14]

Answer:

11.56521 m/s

Explanation:

$A_1$ = Area of first section = $14\times 2$

$A_2$ = Area of second section = $5\times 0.92$

$V_1$ = Velocity in first section = 1.9 m/s

$V_2$ = Velocity in second section

From the continuity equation we get

$A_1V_1=A_2V_2\\\Rightarrow V_2=\dfrac{A_1V_1}{A_2}\\\Rightarrow V_2=\dfrac{14\times 2\times 1.9}{5\times 0.92}\\\Rightarrow V_2=11.56521\ m/s$

The speed of the river through the section of rapids is 11.56521 m/s

5 0

3 years ago

How does the speed of sound in water compare to the speed of sound in air

AlladinOne [14]

the speed of sound in water is slower than the speed of air

6 0

3 years ago

Which material would you most likely to find in the c horizon

Ne4ueva [31]

Answer:

the answer would be parent material

Explanation:

7 0

3 years ago

A 5.00 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the en

masya89 [10]

Answer:

F=124.03 N

Explanation:

Given data

mass m=5.00 kg

y(t)=(2.80 m/s)t+(0.61m/s³)t³

To find

Force F at t=4.10 s

Solution

As

$y(t)=(2.80m/s)t+(0.61m/s^{3} )t^{3}$

derivative with respect to time we get

$\frac{dy(t)}{dt} =v(t)=2.80+1.83t^{2}$

again derivative with respect to time to get acceleration

$\frac{dv(t)}{dt}=a(t)=3.66t$

at t=4.10 s then a(t) is

a=3.66(4.10)

a=15.006 m/s²

Now to use Newton law to find force in y direction

$F-mg=ma\\F=mg+ma\\F=(5.00kg)(9.8m/s^{2} )+(5.00kg)(15.006m/s^{2} )\\F=49N+75.03N\\F=124.03N$

8 0

3 years ago