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Sonja [21]
3 years ago
14

А

Physics
1 answer:
bagirrra123 [75]3 years ago
7 0

Explanation:

The reading on the scale is

W = m(g + a)

= (77 kg)(9.8 m/s^2 + 2 m/s^2)

= 908.6 N

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Please provide the steps
elena-s [515]

Answer:

wA - T =mA(a)

second option

Explanation:

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8 0
3 years ago
A 40 Watt lightbulb is on for 3 minutes. How many joules of work does it do?
ella [17]

Answer:

Explanation:

Power (p)= 40 watt

time (t)= 3 minutes = 180 seconds

Energy (E)= ?

we know

P = E/t

40 = E / 180

E = 7200 Joules

Therefore it does 7200 joules of work.

hope it helps :)

6 0
3 years ago
PLEASE HELP HONESTLY!!! 50 POINTS TO THE BRAINIEST!!! :)
krek1111 [17]
Im not gonna write for you a whole short story (I don't have time), but just describe what you observed (in a fake reality).

For the relationship between the predator-prey: you could say a snake eating a mouse. 

Commenalism: lets say...moss grows on a tree and benefits, but it doesn't hurt or effect the tree.

Mutalism: a bird on a rhino. The bird eats parasites and bugs that feed off the rhino, the bird gets food and the rhino stays clean and parasite free.

Parasitism: a dog and a flea. Only the flea benefits from the dog. The dog has to suffer from the parasites evilness. 

Now just thread it together and describe it. Comparing is easy, just use the definition of, for example, commensalism, mutalism, in one relationship, one organism benefits, in the other, both benefit.
Have fun!

5 0
3 years ago
Read 2 more answers
What is the purpose of a rear view mirror in a car?
Nat2105 [25]
The purpose of a rear view mirror in a car is to see behind the car, if there is any car coning or not.
3 0
3 years ago
5. A wire, resistance 23.6 carries a current. 5.9 A. What is the
posledela

answer : p.d = 23.6 x 5.9 =139.14

Explanation:

p.d = I x r

3 0
3 years ago
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