4 years ago

During which of the following activities may in inflatable personal flotation device to be used

1 answer:

5 0

They may be used whenever you are not experienced with swimming and you are near the water such as swimming, canoeing, etc

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Homework help asap!!

ozzi

Where is the picture cant6 see it

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4 years ago

A beam of light strikes a mirror at angle of 23° to the normal. What is the angle between the incident and reflected beam?

My name is Ann [436]

Answer:

well, during reflection

angle of incident is equal to angle of reflection so if angles of incident is 23° , then angle of reflection is also equal to 23° .

so the total angle between the reflected and incident ray will be equal to angle of incidence plus angle of reflection

i.e. angle i + angle r = 23° + 23° = 46°

hence the required angle is 46°

i hope it helped .

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3 years ago

Determine the identity of an unknown element X using the given table and following clues: I) Element X is a solid II) Element X

klasskru [66]

The answer is calcium. I just did it and it was correct

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3 years ago

Read 2 more answers

In one experiment, you measured the potential difference across a resistor as a capacitor discharged through it. You then plotte

Xelga [282]

Answer:

Explanation:

For discharge of capacitor in RC circuit , the relation is as follows

$V=V_0e^\frac{-t}{\lambda}$

V is voltage across the capacitor , V₀ is maximum voltage across capacitor , λ is time constant and t is the time after which the voltage is recorded. During discharge this will also be voltage across resistance .

Taking log on both sides

lnV = lnV₀ - $\frac{t}{\lambda}$

Given equation

[lnV] = - .027 t + 2.5

Comparing these equation

$\frac{1}{\lambda} = .027$

λ = 37 s

time constant = 37 sec.

5 0

3 years ago

hey guys, l need some help! what is the weight of potatoes of mass 75 kg on the surface of the earth? (g=9.8m/s square) ans=735N

Airida [17]

Answer:

735N

Explanation:

Weight is a measurement of force.

F = Force

m = mass

a = acceleration

F = m*a

F = 75kg*9.8m/s²

F = 735N

8 0

3 years ago