Thermal expansion occurs because of a change in temperature to the material. It affects the shape, area, volume and even the density of the material. Thermostats which is present in millions of cars are operated by using the expansion of metal. It is also used in the heat switch on many types of machinery and home appliances. Because of thermal expansion and cold flow of aluminum, standard copper conductor cannot be safely used on aluminum wire.
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What will happen to the current if the voltage is reduced to one half?
in the simple harmonic motion of a block on a spring, what is the restoring force proportional to?
Answer:
Explanation:
displacement
Simple harmonic motion is often modeled with the example of a mass on a spring, where the restoring force obey's Hooke's Law and is directly proportional to the displacement of an object from its equilibrium position.
2 to the power of 10 is 25
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1)Calculate the mass of a girl that has a weight of 113 Newtons.
2)Determine the weight of a boy of mass 13.4 Kg.
could someone help e asap with this
Answer:
Explanation:We should know that weight = mass * gravity.
That is weight equals mass times gravity.
Gravity is a force of attraction between any two bodies in the universe. It is directly proportional to product of their masses and inversely proportional to the square of the distance between them.
Gravity is generally measured in terms of acceleration due to gravity, denoted as g. For Earth it is, 9.8 m/s². And for moon, it is about 1.62 m/s².
On Earth, your weight is 70 kg = W
W = mass x 9.8
70 = mass x 9.8
Your mass is 70/ 9.8
i.e approximately 7.14
Weight at the Moon, W' = 7.14 x 1.62
Hence, your weight on the surface of the moon is just 11.56 kg.
Congratulations, you've lost about 58.14 kilograms without any hard exercise. And you're as light as a Sweedish Vallhund! Cheers!
How do you calculate concrete weight per cubic yard?
what is an avcoto????//
Answer:
avocado, also called alligator pear, fruit of Persea americana of the family Lauraceae, a tree native to the Western Hemisphere from Mexico south to the Andean regions.
Explanation:
the local units are not internationally accepted for measurement why
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Find the instantaneous velocity at 8.5s
Calculate the total resistance and current in a parallel circuit with three resistors of 4 ohms, 8 ohms, and 16 ohms, using any one of the five methods (calculator suggested). What are the values
Answer: 2.3 ohms (5.3 amperes)
Explanation:
The light-colored, heavily cratered areas that often occur at higher elevations on the Moon are known as the ______.
Answer:
Lunar Highlands
Explanation:
A car is moving at a speed of 19.8 m/s does the highway.
If it travels for 140s, how far will it move?
Answer:
A car is moving at a speed of 19.8 m/s does the highway.
If it travels for 140s, how far will it move?
Explanation:
A car is moving at a speed of 19.8 m/s does the highway.
If it travels for 140s, how far will it move?
in simple harmonic motion, the speed is greatest at that point in the cycle when
Answer:
when the magnitude of the acceleration is a minimum
Explanation:
which rock band personally paid for the lighting of prague castle?
Answer:
The Rolling Stones
Explanation:
is the total energy input of a wood fire is equal to the total energy output ?
Answer:
Energy in the campfire originates from the potential chemical energy of the wood, before it is burnt to warm and give light around the campfire.
Explanation:
For a camp fire, the energy input is in the form of the potential chemical energy, stored up in the firewood used to fuel the flame.
The energy output is in the form of heat energy that the campfire radiates all around, light energy given off from the flame, and a little bit of sound energy, heard in the cracking of the firewood as they burn in the flame.
chemical energy ⇒ heat energy + light energy + sound energy
a car reaches 80 kilometers per hour, then suddenly crashes into the concrete wall
Answer:
what is the question ? That is only a statement
What is the voltage across a 6 Q load when 3 A of current passes through it?
A. 2V
B. 9V
C. 18V
D. 36V
Answer:
It's 18V.
Explanation:
V = I•R
V = 3•6
V = 18
18V
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Why is loyalty important citizenship?
CER
Claim:
Evidence:
Reasoning:
Answer:
Loyalty-Being loyal is important to being a good citizen because it shows that you acknowledge the effort others have put in to what you are doing and it shows that you enjoy what you are doing. Loyalty is important to a productive community because it promotes good work and effort
Explanation:
The mass of the train is 120 000 kg.
Calculate the acceleration of the train at 10, s.
Answer:
120,010
Explanation:
why does he bring her back even though he might be punished
Answer: because he loves her:)
Explanation:
sound waves in air are a series of what?
Answer:
longitudinal waves
Explanation:
they are called longitudinal waves because particles of the medium through which the sound is transported vibrates parallel to the direction that the sound wave moves
Part C
Both circuit 2 and circuit 3 have a battery that provides energy to light two bulbs. Based on your observations of
brightness, which battery would run out more quickly when the switches are closed?m
Answer: The battery in circuit 3 would run out more quickly when the switches are closed because the two bulbs are brighter, which means the battery is providing more energy to that circuit.
Explanation: Answer from plato
A 8 kg cat is running 4 m/s. How much kinetic energy does it
have?
tin nergy and is rolling
Answer:
The formula for kinetic energy is,
where m is mass and v is velocity.
It's kinetic energy is 64 Joules.
Explanation:
What does Newton’s law of universal gravitation state?
Answer
Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with the force varying directly the product of the masses and inversely as the square of the distance between them. ...
Realiza la siguiente conversión de unidades: 340 N a Kgf
Answer:
The answer is 34.67 kilograms force
a boy slides down a hill on a sled accelerating 0.90 m/s^2. if he started from rest, what distance would he slide on the snow in 5s?
Answer:
4.5 m
Explanation:
multiply 0.90 by 5
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Explanation:
I think that's helpful, correct
what are the ways to achieve physical fitness?(3-5 sentences)
Answer:
Choose aerobic activities such as walking.
Exercise for at least 30 minutes on all or most days of the week.
Cut back on junk food.
Eat smaller food portions.
Increase the amount of fresh fruits and vegetables, lean meats, low-fat dairy products and wholegrain foods in your daily diet.
Explanation:
this is the correct answer
on the pH scale the closer you get to 14, the more acidic the substance
is this true or false?
false
Explanation:
because ,as the number of ph increases it is to basic
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What does the amplitude of sound refer to?
the sound’s volume
the sound’s pitch
the sound’s duration
the sound’s frequency
Answer:
2) the sounds pitch
The strength or level of sound pressure
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like kinds of magnetic poles repel while unlike kinds of magnetic poles
Answer:
attracts
Explanation:
A 1 kg cart has 5 J of work done on it. If the initial velocity of the cart was 3 m/s, what is the final velocity of the cart?
The final velocity of the cart at the given mass is 4.36 m/s.
The given parameters;
mass of the cart, m = 1 kgwork done on the cart, W = 5 Jinitial velocity of the cart, u = 3 m/sThe distance traveled by the cart is calculated as follows;
Fd = W
mgh = W
[tex]h = \frac{W}{mg} \\\\h = \frac{5}{1 \times 9.8} \\\\h = 0.51 \ m[/tex]
The final velocity of the cart is calculated as follows;
[tex]v^2 = u^2 + 2gh\\\\v^2 = (3)^2 + 2(9.8)(0.51)\\\\v^2 = 18.996\\\\v = \sqrt{18.996} \\\\v = 4.36 \ m/s[/tex]
Thus, the final velocity of the cart at the given mass is 4.36 m/s.
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