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IrinaVladis [17]
3 years ago
14

A machine that is used to print newspapers is a _____.

Physics
2 answers:
morpeh [17]3 years ago
7 0

Answer:

Capital good

Hope this helps!

Explanation:

Luden [163]3 years ago
5 0

A printing press is used to print newspapers. It would be considered a capital good.

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Water at 0°C loses 1140 calories worth of heat. How much of the water freezes? [Lf= 79.7 cal/g] a) 16.8 g b) 81.5 g c) 0.002 g d
Simora [160]

Answer:

option d)

Explanation:

The amount of heat required to convert the 1 g of ice at 0 degree C to 1 g water at 0 degree C is called latent heta of fusion.

H = m Lf

where,, h is the heat required, m is the mass and Lf is the latent heat of fusion

1140 = m x 79.7

m = 14.3 g

8 0
3 years ago
1.Which of the following is the best example of motion?A.Waving your armsB.Tossing and turning in your bedC.Walking from home to
vlabodo [156]

Answer:

A

Explanation:

4 0
3 years ago
How much heat does a freezer need to remove from 1kg of water at 40°C to make ice at 0°C? (You will need to use the specific hea
Montano1993 [528]

Answer:

Explanation:

Q = m c Δt

heat withdrawn to lower temperature by 40° C

Q = 1 X 1000 X 40 = 40,000 calories.

Q = mL

heat withdrawn to freeze water at 0°C to ice

= 1 x 80000 = 80,000 calories

total heat to be withdrawn = 120,000 calories. = 120,000 x 4.2 = 504 ,000 Joules.

3 0
3 years ago
An isotope has a half life of 2.5 minutes how many half -lives go by in 17.5 minutes
ale4655 [162]

Answer:

7 half-lives

Explanation:

7 0
4 years ago
A stuntman with a mass of 82.5 kg swings across a pool of water from a rope that is 12.0 m. At the bottom of the swing the stunt
Brilliant_brown [7]

Answer:

The stuntman will not make it

Explanation:

At the bottom of the swing, the equation of the forces acting on the stuntman is:

T-mg = m\frac{v^2}{r}

where:

T is the tension in the rope (upward)

mg is the weight of the man (downward), where

m = 82.5 kg is his mass

g=9.8 m/s^2 is the acceleration due to gravity

m\frac{v^2}{r} is the centripetal force, where

v = 8.65 m/s is the speed of the man

r = 12.0 m is the radius of the circule (the length of the rope)

Solving for T, we find the tension in the rope:

T=mg+m\frac{v^2}{r}=(82.5)(9.8)+(82.5)\frac{8.65^2}{12.0}=1322 N

Since the rope's breaking strength is 1000 N, the stuntman will not make it.

4 0
3 years ago
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