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Helga [31]
3 years ago
14

I need help with science due tommorow

Physics
1 answer:
Andrews [41]3 years ago
8 0
The first one is the light bends sheikh is known as refraction
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Electricity from the local power company costs 7.22 cents/kWh. A homeowner wishes to pay a maximum of 25 cents per month for the
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Whatever that number is, the maximum hours per month is

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Which reading strategy helps you to read and understand a passage quickly by making use of your previous knowledge?
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Taking notes,because you can read back on what you learned
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If the caffeine concentration in a particular brand of soda is 2.97 mg/oz, 2.97 mg/oz, drinking how many cans of soda would be l
Ray Of Light [21]

Explanation:

The given data is as follows.

     Concentration of caffeine = 2.97 mg/oz

     Number of oz in a can = 12 oz

Therefore, the concentration of caffeine in one can is calculated as follows.

                 = (12 \times 2.97) mg

                 = 35.64 mg

                 = 35.64 \times 10^{-3} g

Since, it is given that lethal dose is 10.0 g. Hence, number of cans are calculated as follows.

     No. of cans = \frac{\text{Lethal dose}}{\text{concentration in one can}}

                         = \frac{10 g}{35.64 \times 10^{-3} g}

                         = 280.58

                         = 281 (approx)

Thus, we can conclude that 281 cans of soda would be lethal.

5 0
3 years ago
Which of the following statements are true? Select all that apply.
beks73 [17]

Answer:

The following options are true based on the properties of electric field;

a) Electric field lines near positive point charges radiate outward.

b) The electric force acting on a point charge is proportional to the magnitude of the point charge.

d) In a uniform electric field, the field lines are straight, parallel, and uniformly spaced.

Explanation:

From option b) From coulomb's law F = Kq1q2r/r2

5 0
3 years ago
What is the velocity of a plane that traveled 3000 miles from new york to california in 5 hours
AnnZ [28]

The velocity is  (3,000/5) = 600 miles per hour west .

5 0
3 years ago
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