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nevsk [136]
3 years ago
14

In which situation is no work being done? A. a person carrying a box from one place to another B. a person picking up a box from

the ground C. a person pushing a box from one place to another D. a person pulling a box from one place to ano
Physics
1 answer:
tatiyna3 years ago
3 0

Answer:

The answer is A

Explanation:

Being the force is acting upwards and displacement takes place horizontally

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Why does a comet's tail point away from the Sun? 1Choice 1 The solar wind blows the tail away from the Sun. 2 It is being pulled
AnnyKZ [126]

Choice 1

The Sun's radiation and solar wind cause the dust and gas around the comet (coma) to stretch the coma. The solar wind electromagnetically blows the ions in the coma away.

4 0
3 years ago
A. Compare solids, liquids, and gases in terms of the way their volumes change (or don't change) when placed into different cont
svet-max [94.6K]

a) Solids keep shape, liquids take shape of containers but don't spill, gases take container's shape and spill out

b) if you heat gas, speed of its molecules will increase and they'll push the container's walls stronger, so the pressure will increase when the container heated

c) Heat flows from warmer to colder bodies

d) For monatomic gases it's U=1.5nRT only, molecular gas has bonds between atoms so total internal energy increases

e) Of gases

f) v=\sqrt{\frac{3RT}{M}}=321 m/s

g) U=5/2*nRT=37830.85 J

7 0
2 years ago
Calcula el peso aparente de una bola de aluminio de 50 cm3, cuando se encuentra totalmente sumergida en alcohol. Datos: la densi
artcher [175]

Answer:

W_apparent = 93.1 kg

Explanation:

The apparent weight of a body is the weight due to the gravitational attraction minus the thrust due to the fluid where it will be found.

            W_apparent = W - B

The push is given by the expression of Archimeas

            B = ρ_fluide g V

            ρ_al = m / V

            m = ρ_al V

we substitute

            W_apparent = ρ_al V g - ρ_fluide g V

            W_apparent = g V (ρ_al - ρ_fluide)

       

we calculate

           W_apparent = 980 50 (2.7 - 0.8)

           W_apparent = 93100 g

            W_apparent = 93.1 kg

7 0
2 years ago
Which of the following is not an advantage that attractive people enjoy in interpersonal relationships?
Licemer1 [7]

Psychology on Egenuity Oct 5th 2018 says answer is C


5 0
3 years ago
Read 2 more answers
The attraction will vary directly with the separation between the charges.
Burka [1]
No it won't. It'll vary inversely as the square of the separation.
4 0
2 years ago
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