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3 years ago

If you put two identical cars on opposite sides of a large magnet, what happens

Physics

2 answers:

FrozenT [24]3 years ago

7 0

Answer:

Depends on what pole it is.

Explanation:

If the poles of the cars and magnets are the same they will repel, if different, attracts.

AnnyKZ [126]3 years ago

3 0

Answer:

Nothing. because it's on the opposite aide

Explanation:

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2. Express the following in SI units a) 0.009 cm? b) 25 km

pentagon [3]

Answer:

a).

S.I units of length is meters. So we've to change cm → m

${ \rm{1 \: cm \: \dashrightarrow \: 0.01 \: m}} \\ { \rm{0.009 \: cm \: \dashrightarrow \: (0.009 \times 0.01)}} \\ \\ = { \underline{ \rm{ \: \: 0.00009 \: m \: \: }}}$

b).

km → m

${ \rm{1 \: km \: \dashrightarrow \: 1000 \: m}} \\ { \rm{25 \: km \: \dashrightarrow \: (25 \times 1000)}} \\ \\ = { \underline{ \rm{ \: \: 25000 \: m \: \: }}}$

4 0

3 years ago

Help please 10 pts and quick!<br><br> can someone write me a short response

zmey [24]

Answer:

Explanation:

Pecan 1 and 4 seem the best answer

6 0

3 years ago

Which of the following choices correctly pairs the organism with its phylum?

castortr0y [4]

My lg is driplikemessiah and I don’t know which one it is but I say go with C

8 0

2 years ago

A car starting from rest accelerates at a constant 2.0 m/s2 for 10 s. It then travels with constant speed it has achieved for an

Anon25 [30]

Answer:

The total distance will be 400 m.

Explanation:

For portion AB:

Acceleration = 2 $m/s^2$

t= 10 s

Car start from rest , u=0 m/s

We know that

$S=ut+\dfrac{1}{2}at^2$

$S=0+\dfrac{1}{2}\times 2\times 10^2$

S= 100 m.

For portion BC:

V= u + at

V=0 + 2 x 10

V= 20 m/s

In this portion car moves with constant velocity 20 m/s for 10 s.

So distance S= V x t

S=20 x 10 =200 m.

For portion CD:

The velocity at point C will be 20 m/s

In this portion the final speed of car will be zero because given that at final car come to rest.

So the acceleration will be in the negative direction to stop the car.

We know that

$v^2=u^2-2aS$

$0=20^2-2\times 2\times S$

S=100 m

The total distance AD=AB + BC+ CD

AD=100 +200 + 100 m

AD=400 m.

The total distance will be 400 m.

4 0

3 years ago

Four wires are made of the same highly resistive material, cut to the same length, and connected in series. Wire 1 has resistanc

Paraphin [41]

Answer:

$V_2 = \frac{R_2 V_0}{R_1+R_2+R_3+R_4}$

Explanation:

The 4 wires are connected in series: this means that the same current flow through them, and the voltage of the battery, V0, is equal to the sum of the voltages on each individual resistor:

$V_0=V_1+V_2+V_3+V_4$