The girl is using her arm to lift a weight. Her arm is acting as a _______.

Physics

2 answers:

Maurinko [17]3 years ago

8 0

Force.

Pulling and pushing are also ways of exerting force on an object.

devlian [24]3 years ago

6 0

Her arm acts as a pulley

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When you drink cold water, your body must expend metabolic energy in order to maintain normal body temperature (37Â° C) by warmi

Gelneren [198K]

Answer:

7.72 Liters

Explanation:

normal body temperature = T_body =37° C

temperature of ice water = T_ice =0°c

specfic heat of water = c_{water} =4186J/kg.°C

if the person drink 1 liter of cold water mass of water is = m = 1.0kg

heat lost by body is Qwater =mc_{water} ΔT

= mc{water} ( T_ice - T_body)

= 1.0×4186× (0 -37)

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= 286×4186J

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= 286×4186J/154.882×10^3 J

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Read 2 more answers

We need to find the launch velocity of our new marble launcher. we know that it will launch a 25g marble to a distance of 73 cm,

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