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3 years ago

Why is an alarm clock going "off" when it actually turns on?

Physics

2 answers:

Strike441 [17]3 years ago

6 0

Probaly because of the privouse time that it was on

goblinko [34]3 years ago

3 0

The alarm is going off because the alarm has already been set to activate.

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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 football is left on the field outside during the winter months, the next morning the football was partially deflated. Using wh

jenyasd209 [6]

Answer:

Volume decreases due to less molecular motion of the gas inside the football.

Explanation:

Assuming that the atmospheric pressure (and therefore, the pressure of the air inside the football) remains constant, this means that we can apply Charle's law, which states that:

"For a fixed amount of gas kept at constant pressure, the volume of the gas is proportional to its absolute temperature"

Mathematically:

$\frac{V}{T}=const.$

where

V is the volume of the gas

T is its absolute temperature

In the winter month, the air becomes colder, which means that the temperature of the air (and of the gas inside the football) decreases. As the average kinetic energy of the molecules of a gas is proportional to its absolute temperature, this also means that there will be less molecular motion in the gas, and therefore (as stated by Charle's law) the volume of the gas also decreases.

7 0

3 years ago

Formula = solute+solvent=

Alexus [3.1K]

Answer:

solute + solvent = solution

Explanation:

solute is Any substance that is dissolved in a liquid solvent to create a solution

solvent is A liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution.

and.

solution is A homogeneous mixture, which may be liquid, gas or solid, formed by dissolving one or more substances.

6 0

3 years ago

In an experiment all participants receive a treatment but those in the control group receive a false treatment which is called a

Alchen [17]

Answer:

Placebo ?

Explanation:

6 0

3 years ago

A person pushes a 10 kg box from rest and accelerates it to a speed of 4 m/s with a constant force. If the box is pushed for a t

lutik1710 [3]

The box is accelerated from rest to 4 m/s in a matter of 2.5 s, so its acceleration a is such that

4 m/s = a (2.5 s) → a = (4 m/s) / (2.5 s) = 1.6 m/s²

Then the force applied to the box has a magnitude F such that

F = (10 kg) (1.6 m/s²) = 16 N

7 0

3 years ago