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diamong [38]
3 years ago
12

A truck with a mass of 5000 kg and transfers 800,000 newtons(N) of force when it hits a wall. What was the acceleration of the t

ruck?
a. 160 m/s
b. 160 km/hr
c. 160 m/s2
d. 160 miles/hr
Physics
1 answer:
Troyanec [42]3 years ago
4 0
Answer is C. 160 m/s2
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As mass increases does potential energy decrease or increase?
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The equation for potential energy is = mgh (m stands for mass, g stands for gravitational acceleration, and h stands for height)
So if mass increases, it will also increase potential energy
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4 years ago
How much work did the movers do (horizontally) pushing a 43.0-kg crate 10.4 m across a rough floor without acceleration, if the
Ilia_Sergeevich [38]

The crate is in equilibrium. Newton's second law gives

∑ <em>F</em> (vertical) = <em>n</em> - <em>mg</em> = 0

∑ <em>F</em> (horizontal) = <em>p</em> - <em>f</em> = 0

where

• <em>n</em> = magnitude of the normal force

• <em>mg</em> = weight of the crate

• <em>p</em> = mag. of push exerted by movers

• <em>f</em> = mag. of kinetic friciton, with <em>f</em> = 0.60<em>n</em>

<em />

It follows that

<em>p</em> = <em>f</em> = 0.60<em>mg</em> = 0.60 (43.0 kg) <em>g</em> = 252.84 N

so that the movers perform

<em>W</em> = <em>p</em> (10.4 m) ≈ 2600 J

of work on the crate. (The <em>total</em> work done on the crate, on the other hand, is zero because the net force on the crate is zero.)

8 0
3 years ago
2 PUILLS
Colt1911 [192]
B-friction acts in direction opposite to objects motion
5 0
3 years ago
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_______ from the mantle rises and flows out through a vent onto Earth's surface as _______. This molten material, sometimes alon
anygoal [31]
Magma from the mantle rises and flows out through a vent onto Earth's surface as lava. This molten material, sometimes along with ash, cinders, and rock, builds up a mountain around the vent. The vent and its mountain together are called a sediment.


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3 years ago
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What are the component parts of modern fireworks? What does each part do?
EleoNora [17]

Answer: Aluminum, Antimony, Barium, Calcium, Carbon, Chlorine, Copper, Iron, Lithium, Magnesium, Oxygen, Zinc, Titanium, Strontium, Sulfur, Sodium, Potassium, Phosphorus

Explanation:

Aluminum: Aluminum is a common component of sparklers.  It is used to produce silver and white flames and sparks.

Antimony: Antimony is used to create firework glitter effects.

Barium: Barium is used to create green colors in fireworks, and it can also help stabilize other volatile elements.

Calcium: Calcium is used to deepen firework colors. Calcium salts produce orange shades in the fireworks.

Carbon: Carbon is an important components of black powder, which is used as a propellant in fireworks. Carbon provides the fuel for a firework. Common forms include carbon black, sugar, or starch.

Chlorine: Chlorine is an important component of many oxidizers in fireworks. Several of the metal salts that produce colors contain chlorine.

Copper: Copper compounds produce blue shades in fireworks.

Iron: Iron is used to produce sparks. The heat of the metal determines the color of the sparks in this case.

Lithium: Lithium is a metal that is used to impart a red color to fireworks. Lithium carbonate, in particular, is a common colorant.

Magnesium: Magnesium burns a very bright white, so it is used to add white sparks or improve the overall brilliance of a firework.

Oxygen: Fireworks include oxidizers, which are substances that produce oxygen in order to support. The oxidizers are usually nitrates, chlorates, or perchlorates. Sometimes the same substance is used to provide oxygen and color.

Phosphorus: Phosphorus burns spontaneously in air and is also responsible for some glow-in-the-dark effects. It may be a component of a firework's fuel.

Potassium: Potassium helps to oxidize firework mixtures. Potassium nitrate, potassium chlorate, and potassium perchlorate are all important oxidizers.

Sodium: Sodium produces a gold or yellow color in fireworks, however, the color may be so bright that it masks less intense colors.

Sulfur: Sulfur is a component of black powder. It is found in the firework's propellant/fuel.

Strontium: Strontium salts give a red color to fireworks. Strontium compounds are also important for stabilizing fireworks mixtures.

Titanium: Titanium metal can be burnt as powder or flakes to produce silver sparks.

Zinc: Zinc is used to create smoke effects in fireworks and other pyrotechnic devices.

5 0
4 years ago
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