When evaluating promotional claims, it is important to __________.a.do your own research c.determine if there are other possible solutions b.ask if it makes sensed.all of the above

Answers

Answer 1

Answer: D. ALL OF THE ABOVE.

Promotional claims are given by companies to attract potential buyers with the intent of selling their goods and services.

Consumers must not only rely on what these promotional claims are saying, instead one must do his or her own research to verify if said claims are true, will benefit the consumer and is the only viable or practical solution needed to satisfy the needs of the consumer.

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Sa se calculeze caldura degajata de un fier de calcat dace este alimentat la 220v si este parcurs de un curent electric de 100 a. Se stie ca acesta functioneaza 25 de min

Answers

Answer

33,000,000 joules or 33MJ

Explanation:

The formula for calculating the heat released by a substance is expressed as shown below;

where;

Q is the amount of heat released

p is the power expended

t is the time it takes

$Since P = current * voltage\nP = IV$

Then;

$Q = IVt$

Given the current I = 100A, supply voltage V = 220V and required time t = 25mins

t = 25 * 60 = 1500 seconds

Substituting these values in the formula that we have;

$Q = 100 * 220 * 1500\nQ = 22000*1500\nQ = 33,000,000Joules\ or\ 33MJ$

Help with #3 please

Answers

Answer:

The answer to your question is va = 8 cm/s, vb = 12.5 cm/s, a = 9 cm/s²

Explanation:

Data

Ta = 0.125 s

Tb = 0.08 s

Δtab = 0.5 s

distance = 1 cm

Process

1.- Calculate va

va = 1/0.125 = 8 cm/s

vb = 1/0.08 = 12.5 cm/s

2.- Calculate Δv

Δv = 12.5 - 8

Δv = 4.5 cm/s

3.- Calculate acceleration

a = Δv / Δt

a = 4.5/0.5

a = 9 cm/s²

How does wavelength relate to frequency?

Answers

The larger the wavelength the lower the frequency, and the smaller the wavelength the higher the frequency

What is the acceleration of all objects due to gravity? What does this mean?

Answers

Every body that has larger mass has a field of attraction called gravitational field. All objects abandoned in the region of this great body is attracted to its center. The large body prints the object an acceleration which is called the acceleration of gravity.

Gravity acts on everything. The force if gravity is equal to 9.8 m/s^2

How do simple machines make work easier? A.They change the strength or direction of a force.

B.They maintain the distance of a force.

C.They apply force quickly.

D.They decrease the power available.

Answers

I believe it is c. hope this Helps :)

The angle between the two vectors A=3i^+4j^+5k^ and B=3i^+4j^−5k^ will be: a. 90 degree b. 0 degree . 60 degree d. 30 degree

Answers

Answer:

Both vectors have the same X and Y components therefore

the angle between the two vectors is zero

(B) is correct

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