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jeka57 [31]
4 years ago
7

The first step when doing an investigation is the observe a situation. True or false?

Physics
2 answers:
liubo4ka [24]4 years ago
8 0
The answer is true. you always need to observe and analyze a situation before taking further action!
Sunny_sXe [5.5K]4 years ago
6 0

Answer:

True! First step is to make objective observations.

You might be interested in
If we measure the temperature of a blackbody to be about 300 K (a typical air temperature in Florida), at what wavelength would
Nostrana [21]

Answer:

9.66 x 10^-6 m

Explanation:

Use the Wein's displacement law

\lambda _{m}\times T = b

Where, b is the Wein's constant

b =  2.898 x 10^-3 meter-kelvin

So, λm x 300 =  2.898 x 10^-3

λm = 9.66 x 10^-6 m

3 0
3 years ago
An electric field of 790,000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of
matrenka [14]

Answer:

-2370000 N force acts on the charge particle    

Explanation:

We have given electric field E = 790000 N/C

Charge q=-3\mu C=-3\times 10^{-6}C

We know that force on any charge particle due to electric field is given by

F=qE, here q ia charge and E is electric field

So force F=-3\times 10^{-6}\times 790000=-2370000N

So -2370000 N force acts on the charge particle  

5 0
3 years ago
You have a large flashlight that takes 4 D-cell batteries, each with a voltage of 1.5 volts. If the current in the flashlight is
tino4ka555 [31]

Answer:

The answer is "C. 3.0 ohms". 

Explanation:

Ohm's law states the following:,

V = IR

where:

Voltage (V) = 1.5 volts × 4 batteries = 6.0 volts

Current (I) = 2.0 amps

Resistance (R) = ? ohms

To solve for Resistance (R) the equation must be rearranged this way:

 R = V / I

Then, the variables must be replaced with the known values:

 R = 6.0 volts / 2.0 amp

R = 3.0 ohms

The answer is  C. 3.0 ohms. 

------------

P.D: I got it right on PLATO

7 0
3 years ago
Financial contracts involving investments, mortgages, loans, and so on are based on either a fixed or a variable interest rate.
IgorC [24]

Answer:

Simple interest saving account: $929

Annual compound interest account: $1147.66

Quarterly compound interest account: $1,170.99

Explanation:

There are simple equation you can use the compute the amount of money you will have when each of the three situations given in the questions are applied. The following illustrates for each scenario.

Simple Interest Rate Scenario

Simple interest is the interest rate that is applied only on the original principal amount. So in this scenario, the 6.6% interest is rate is the rate of interest that Katherine will continue to get on her initial deposit of $500 only even though the balance in the account will increase each year by the amount of interest rate she receives. So after 13 years, 13 years worth of interest will be applied on the original deposit.

The mathematical equation is: FV = P x (1 + RT)

Where, FV is the future value, P is the principal amount, R is the interest rate and T is the time period. When we plug in the values the equation would become:

FV = 500 x [1 + (0.066 x 13)] = $929

Annual Compound Interest Scenario

Compound interest, as opposed to simple interest, is a situation in which the interest rate is being applied on the available balance in the account. So, this balance would include the amount of interest accumulated over prior periods as well. So each year, 6.6% will be applied on the $500 PLUS the amount of interest accumulate.

The mathematical formula includes the same variables but is different in that, FV = P x (1 + R)^T.

Plugging in the values, FV = 500 x (1 + 0.066)^13 = $1,147.66

Quarterly Compounded Interest Scenario

This is similar to the annual compound interest scenario in that interest is applied on both the principal and the prior years' accumulated interest but rather than being applied annually, it will be applied quarterly.

The mathematical formula is FV = P x (1 + \frac{R}{N})^{T x N}. The new variable added is "N" which refers to the number of times the interest is compounded which in the question's context is 4 (quarterly compounding).

So the formula becomes, FV = 500 x (1 + \frac{0.066}{4})^{13 X 4} = $1,170.99

7 0
3 years ago
I need help with This question please. Part a and b and c. Thank u
rosijanka [135]
Well first you will have to add all the sides then you will have to do your work by sowing it legibly
3 0
4 years ago
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