Why is the moon’s surface cratered, but the Earth’s is not

1 answer:

8 0

The comets hit the moon's surface because there is no atmosphere on the moon to protect it. The earth has an atmosphere so it is protected.

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If you found yourself on the see-through side of this one-way mirror what is the best way you could prevent someone on the other

Taya2010 [7]

Answer:

If there is any sheets or padded material in this room you can cover the window, you could turn off all the lights if there is a light switch in the room, you could try to bring a bright flashlight in and shine it into the other room(try to annoy the person watching you so they leave), act really boring and hopefully make the other person lose interest.

Explanation:

(hint) If you actually get in a situation like this place your fingernail against the mirror or glass you think could possibly be a one-way mirror. If there's a gap between your nail and the mirror, it's most likely a genuine mirror :)

7 0

3 years ago

20 points plz help i dont really understand how to do this

Artist 52 [7]

$\huge{ \mathfrak{ \underline{ Answer} \: \: ✓ }}$

1. Calculate the equivalent resistance in the circuit :

In the given diagram, the resistors are in series connection,

So equivalent resistance = sum of resistance of both resistors.

$\large \boxed{R_{eq} =R_1 +R_2 }$

$R_{eq} = 480 + 360$

$R_{eq} = 840 \: ohms$

Therefore, Equivalent resistance = 840 ohms.

2. Calculate the current through the battery :

$\boxed{ \mathrm{current = \dfrac{potential \: \: difference}{resistance} }}$

$i = \dfrac{120}{840}$

$i = \dfrac{1}{7}$

$i = 0.142 \: Amperes$

Hence, current through the battery = 0.142 A

3. How much current is passing through each resistor :

Since the resistors are joined in series connection, the current flowing through each resistor will be equal = 0.142 Amperes.

___________________________

$\mathrm{ \#TeeNForeveR}$

4 0

3 years ago

A 50 kg stcel ball is hanging from two cables that make 120 degrees with each

FrozenT [24]

Answer:

T1 = 490.5 [N], T2 = 490.5[N]

Explanation:

First, we must draw a free body diagram of the steel ball hanging and the two wires holding it as well as the angle forming the wires between them.

The free-body diagram can be seen in the attached image.

As the cables are symmetrical with respect to the vertical axis, the force in cables 1 and 2 is equal, so when performing a force sum equal to zero on the Y-axis, we can find the force value of any cable.

The solution of the equations can be seen in the attached image