How do we gather most of the information we get about the universe around us?

If you use a 1500 watt sound system for 5 hours a day , calculate the amount of electricity used

Strike441 [17]

Answer:

Our appliance and electronic energy use calculator allows you to estimate your ... using the formulas provided below; Installing a whole house energy monitoring system. ... energy consumption a few watt-hours, and you can use a monitor to estimate those too. ... Estimate the number of hours per day an appliance runs.

Explanation:

6 0

3 years ago

( WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST AND SHOWS WORK) A car weighs 15300 N. What is its mass?

mylen [45]

Answer:

Mass, m = 1561.23kg

Explanation:

Given the following data;

Weight = 15300N

We know that acceleration due to gravity is equal to 9.8m/s²

To find mass;

Weight can be defined as the force acting on a body or an object as a result of gravity.

Mathematically, the weight of an object is given by the formula;

$Weight, W = mg$

Where;

m represents the mass of an object measured in kilograms.

g is the acceleration due to gravity measured in meters per seconds square.

Substituting into the equation, we have;

$15300 = m*9.8$

$m = \frac {15300}{9.8}$

<em>Therefore, the mass of the car is 1561.23 kilograms.</em>

7 0

3 years ago

A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 41.5-gram mass is attached at the 28.5-cm

zzz [600]

Answer:

The value is $M = 42.3 \ kg$

Explanation:

From the question we are told that

The first position of the fulcrum is x = 49.7 cm

The mass attached is $m = 41.5 \ g$

The position of the attachment is $x_1 = 28.5 \ cm$

The second position of the fulcrum is $x_2 = 39.2 \ cm$

Generally the sum of clockwise torque = sum of anti - clockwise torque

So

$CWT = m (x_2 - x_1)$

Here CWT stands for clockwise torque

$ACWT = M ( x - x_2)$

So

$m (x_2 - x_1) = M ( x - x_2)$

=> $41.5 (39.2 - 28.5 ) = M ( 49.7 -39.2 )$

=> $M = 42.3 \ kg$

3 0

3 years ago

Determine qual é a carga elétrica de um corpo que possui 1 milhão de partículas?

MaRussiya [10]

Answer:

This can be translated to:

"find the electrical charge of a body that has 1 million of particles".

First, it will depend on the charge of the particles.

If all the particles have 1 electron more than protons, we will have that the charge of each particle is q = -e = -1.6*10^-19 C

Then the total charge of the body will be:

Q = 1,000,000*-1.6*10^-19 C = -1.6*10^-13 C

If we have the inverse case, where we in each particle we have one more proton than the number of electrons, the total charge will be the opposite of the one of before (because the charge of a proton is equal in magnitude but different in sign than the charge of an electron)

Q = 1.6*10^-13 C

But commonly, we will have a spectrum with the particles, where some of them have a positive charge and some of them will have a negative charge, so we will have a probability of charge that is peaked at Q = 0, this means that, in average, the charge of the particles is canceled by the interaction between them.

7 0

3 years ago

A double stranded dna molecule contains 300 adenine molecules and 240 cytosine molecules. How many guanine molecules are in this

Maurinko [17]

Answer:

240 molecules

Explanation:

According to the chargaff rules, the amount of adenine is equal to the amount of thymine and the amount of guanine is equal to the amount of cytosine. Therefore:

$G=C\\A=T$

Now, its easy to conclude:

$G=C=240\hspace{3}molecules$

5 0

3 years ago

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