Answer:
Increase the temperature of juice in Glass A by 20 °C
Answer:
lil baby
Explanation:
how do you increase the ideal mechanical advantage of an inclined plane?
Answer:
The mechanical advantage increases as the slope of the incline decreases. But the load will then have to be moved a greater distance. The ideal mechanical advantage (IMA) of an inclined plane is the length of the incline divided by the vertical rise, the so-called run-to-rise ratio.
Explanation:
PLEASE MARK ME AS BRAINLIEST
1. How do we tell how much energy a ray of light has?
By it's temperature
By it's color
By it's brightness
2. Which of the following are common forms of energy released by electrons dropping from heightened energy levels?
Light, Heat
Motion, Sound
Light, Kinetic
Heat, Potential
4. Describe the shape of a field created by a bar magnet.
5. On a microscopic scale, the energy change in a system is described by a
A change in color or texture
Measuring the temperature
A chemical equation
An odor
6. The aurora borealis lights that appear in the northern hemisphere are caused by the interaction between what?
Ultraviolet radiation from the Sun and the pollution in the Earth's air
The reflected light off the moon and the scattering particles in the atmosphere
The charged particles from the Sun and natural magnetic field of the Earth
7. What happens to the atoms of a material when you run electricity through that material?
The bonds that hold the atoms together begin to stretch due to the electric current
The neutrons, having no charge, resist the flow the electric energy through the atom
The electricity only goes into atoms that have an overall electric charge of the same orientation of the electric flow
8. The amount of potential energy stored in a magnetic field depends on what?
The size of one magnetic pole
How close two magnet poles are to each other
The number of molecules magnetically aligned in a pole
Whether the pole is a North or South pole magnet
9. Compare and contrast microscopic and macroscopic energy transfer. Give at least three comparisons for each.
10. A plane is landing at an airport. The plane has a massive amount of kinetic energy due to it's motion. When the plane lands, it activates its brakes, causing it to slow down and eventually stop. The kinetic energy that the plane had is now gone. In keeping with the Law of Conservation of Energy, which of the following is the most likely explaination of what happened to that energy?
The brakes used a coil system to convert the kinetic energy into potential energy stored in the brakes
The kinetic energy of the plane gets pushed into the air in front of it due to drag forces, causing the air to move, thus transferring the kinetic energy from the plane to the air
The brakes create friction, which transformed the kinetic energy to heat energy that was dissipated to the surroundings
The kinetic energy is being converted into sound energy by the loud engines of the plane
Ce clasă ești sa văd daca te pot ajuta
This image shows layers underground.
Top to bottom: Soil, Clay, Rocks, Granite.
Which layer will become saturated first when rain falls?
clay
granite
rocks
soil
Answer:
soil
Explanation:
CORRECT
Answer:
soil
Explanation:
Hope this will help
A rock is thrown horizontally off a cliff with an initial velocity of 15 m/s. How high was the cliff if the rock lands 22 m from the base of the cliff?
Answer:
22 m
Explanation:
Answer:
cliff height = 10.55 m
Explanation:
Remarks
This is one of those questions that defies belief. The final vertical velocity is the same as if you just dropped the rock, which is amazing.Another amazing fact is that the horizontal speed has no acceleration. And amazing fact number three is the the vertical initial speed is 0.And finally, the time taken to go horizontally = time to go vertically.Solution
Time
So the time taken is d = r * t
Remember, this formula can only be used when there is no acceleration.
d = 22 meters
r = 15 m/s
t = ?
t = d / r
t = 22 / 15
t = 1.467
Height of the Cliff
vi = 0 (vertially)
a = 9.8 m/s^2
t = 1.467 seconds The time horizontally and vertically is the same.
d = ?
Formula
d = vi*t + 1/2 a t^2
Solution
d = 0 + 1/2 * 9.8 * 1.467^2
d = 10.55 meters.
Aunt Mary needs to hang a picture in her bedroom. She uses a hammer to drive the nail into the wall. Find the force exerted by the hammer on the nail if the hammer stays in contact with the nail for 0.5s and has an impulse of 25Ns
Answer:
50N
Explanation:
Impulse = Force × Time
25 = Force × 0.5
Force = 25/0.5
= 50N
If the sun were to burn out, it would take humans just over 8 minutes to realize because light from the sun takes just over 8
minutes to reach earth. Tommy was 3 years old when his dad showed him a particular star that was estimated to be 18 light years
away from earth. If the star burned out immediately after Tommy was showed it, how old would Tommy be before he realized the
star was gone?
A)
21 years old
B)
18 years old
9 years old
D)
6 years old
the answer is (a. 21
Answer:the answer it’s A) I just took the test on USATestPrep
Explanation:
What will happen to a balloon filled with air when you cool the balloon in ice
Answer:
the volume of balloon decreases by the lower temperature because the gas inside is cool downList some benefits of Cardiovascular exercise:
Answer:
Aerobic exercise reduces the risk of many conditions, including obesity, heart disease, high blood pressure, type 2 diabetes, metabolic syndrome, stroke and certain types of cancer. Weight-bearing aerobic exercises, such as walking, help decrease the risk of osteoporosis.
Answer:
reduced heart attack chance
Explanation:
cholestrol buildups get destroyed by high pressure blood
uwu
HELP MEEEEEEEEEEEEEEEEE
Answer:
I'm pretty sure it's half
Answer:
half
Explanation:
.................................
A constant friction force of 21 N acts on a 63-kg skier for 25 s on level snow. What is the skier’s change in velocity?
the breakdown of rocks by chemical action of air and water is called
Answer:
Chemical weathering
Explanation:
This changes the molecular structure of rocks and soil. For instance, carbon dioxide from the air or soil sometimes combines with water in a process called carbonation. This produces a weak acid, called carbonic acid, that can dissolve rock.
A bullet at 800 m/s horizontally hits a target that is 180m away. How far does the bullet fall before it hits the target?
who was the chairman of drafting committe
6. The transfer of thermal energy by radiation does not require matter.
O True
O False
Answer:false
Explanation:
A skydiver falls out of a plane from rest, and experiences no air resistance. Eventually, this skydiver reaches a velocity of 33 m/s. How much time did this take? *
Answer:
the time taken for the motion is 3.37 s
Explanation:
Given;
initial velocity of the skydiver, u = 0
final velocity of the skydiver, v = 33 m/s
The time taken for the motion is calculated as;
v = u + gt
33 = 0 + 9.8t
33 = 9.8t
t = 33 / 9.8
t = 3.37 s
Therefore, the time taken for the motion is 3.37 s
A 15 n net force is used to move a 5kg box. What is the resulting acceleration?
A. 15m/s^2
B. 5m/s^2
C. 20m/s^2
D. 3m/s^2
Answer:3 m/s
Explanation:
The resulting acceleration to move the 5Kg box is equal to 3m/s². Therefore, option (D) s correct.
What is acceleration?Acceleration can be defined as the rate of change in the velocity of an object with respect to time. The acceleration of an object is a vector parameter with both magnitude and direction. Acceleration is also defined as the first derivative of the velocity w.r.t. time and the second derivative of position w.r.t. time and
According to Newton's 2nd law of motion, the force is equal to the product of the mass (m) and acceleration.
F = ma
And, a = F/m
Therefore, the acceleration (a) inversely proportional to the mass (m).
Given, the force used to move the box, F = 15 N
The mass of the given Box, m = 5 Kg
The resulting acceleration, a = 15/5 = 3 m/s²
Therefore, the acceleration of the box is equal to 3 m/s² when it is pushed with a force of 15 N.
Learn more about acceleration, here:
brainly.com/question/3046924
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Describe the Geocentric Model of the our solar system.
Answer:
its basically our universe
Explanation:
:) hope this helps
The illustration shows the forces in Newtons (N) acting on three different blocks. Which
boxes will move under these conditions?
Answer:a
Explanation:because I know
Answer:
B & C
Explanation:
the first block will not move
A 0.225 kg sample of tin initially at 97.5°c is dropped into 0.115 kg of water. the initial temperature of the water is 10.0°c. if the specific heat capacity of tin is 230 j/kg • °c, what is the final equilibrium temperature of the tin-water mixture
Answer:
The final equilibrium temperature of the tin-water mixture is approximately 18.468 °C
Explanation:
The parameters of heat energy transfer from the tin to the water are given as follows;
The mass of the sample of tin, m₁ = 0.225 kg
The initial temperature of the tin, T₁ = 97.5 °C
The mass of the water into which the tin is dropped, m₂ = 0.115 kg
The initial temperature of the water, T₂ = 10.0 °C
The specific heat capacity of tin, c₁ = 230 J/(kg·°C)
The specific heat capacity of water, c₂ = 4,200 J/(kg·°C)
Let 'T' represent the final equilibrium temperature of the tin-water mixture, we have;
The heat lost by the tin, ΔQ[tex]_{tin}[/tex] = The heat gained by the water ΔQ[tex]_{water}[/tex]
∴ ΔQ[tex]_{tin}[/tex] = ΔQ[tex]_{water}[/tex]
Where;
ΔQ[tex]_{tin}[/tex] = m₁·c₁·(T₁ - T)
ΔQ[tex]_{water}[/tex] = m₂·c₂·(T - T₂)
By substitution, we have;
ΔQ[tex]_{tin}[/tex] = 0.225 kg × 230 J/(kg·°C) × (97.5°C - T)
ΔQ[tex]_{water}[/tex] = 0.115 kg × 4,200 J/(kg·°C) × (T - 10.0°C)
From ΔQ[tex]_{tin}[/tex] = ΔQ[tex]_{water}[/tex], we have;
0.225 kg × 230 J/(kg·°C) × (97.5°C - T) = 0.115 kg × 4,200 J/(kg·°C) × (T - 10.0°C)
∴ 5,045.625 J - 51.75 J/°C × T = 483 J/°C × T - 4,830 J
5,045.625 J + 4,830 J = 534.75 J/°C × T
∴ 534.75 J/°C × T = 9,875.625 J
T = 9,875.625 J/(534.75 J/°C) = 18.4677419 °C ≈ 18.468 °C
The final equilibrium temperature of the tin-water mixture, T ≈ 18.468 °C.
How many electrons per second flow through a wire with a 12pA current?
Write a short paragraph that explains how a sport using a ball would be played differently on a planet of your choice. For example, how would gravity affect a basketball game on Saturn? Or how would gravity affect a baseball game on Mercury?
(Doesnt have to be a full paragraph answer I just need a gist of what it is)
on a different planet I would play a sport similar to soccer. The main difference is that there is zero gravity. To win the game u have to get the ball into the other person's net first.
Explanation:
I was just bored
A fixed source charge particle of 4.1 nC and a second particle with a charge 2.4 nC are separated by a distance of 3.5 cm. What is the electric potential energy between the particles? And if the second particle is released will it move forward or away from the source charge
Answer:
a. 2.53 μJ b. It will move away
Explanation:
a. What is the electric potential energy between the particles?
The electric potential energy U = kq₁q₂/r where k = 9 × 10⁹ Nm²/C², q₁ = 4.1 nC = 4.1 × 10⁻⁹ C, q₂ = 2.4 nC = 2.4 × 10⁻⁹ C and r = distance between charges = 3.5 cm = 3.5 × 10⁻² m.
Substituting the values of the variables into U, we have
U = kq₁q₂/r²
U = 9 × 10⁹ Nm²/C² × 4.1 × 10⁻⁹ C × 2.4 × 10⁻⁹ C/3.5 × 10⁻² m
U = 88.56 × 10⁻⁹ Nm²/3.5 × 10⁻² m
U = 25.3 × 10⁻⁷ Nm
U = 2.53 × 10⁻⁶ Nm
U = 2.53 × 10⁻⁶ J
U = 2.53 μJ
b. And if the second particle is released will it move forward or away from the source charge.
It will move away from the source charge since they have the same sign of charge. Since, opposite charges repel.
Answer:2.5 * 10^6 J away
Explanation:Using the equation PE = 9 * 10^9 * q1 * q2 / r,
where q is charge and r is distance. In this case, the equation would be
9*10^9{(4.1* 10^-9) * (2.4*10^9)/0.035} = 2.5 * 10^6. Both are positive, so they will be away.
Calculate the pressure exerted by the two straps of a handbag that has a force of 15N, and covers an area of 0.5cm2 (each)
Answer:
Pressure = 3000N/m²
Explanation:
Given the following data;
Force = 15N
Area = 0.5cm² to meters = 0.5/100 = 0.005m²
To find the pressure;
Pressure = Force/area
Substituting into the equation, we have:
Pressure = 15/0.005
Pressure = 3000N/m²
How would the model change as the atom forms bonds? The third shell would have eight electrons after the atom gains seven electrons to fill the outermost shell. The third shell would be empty so that the eight electrons in the second level would be outermost after the atom loses one electron. The first and third shells would be empty so that the atom would have eight electrons in its remaining shell after the atom loses three electrons. The first shell would have two electrons and the second shell would have six electrons after the atom loses three electrons.
Answer:
The third shell would be empty, so the eight electrons on the second level would be the outermost after the atom lost one electron
Explanation:
When an atom is bonded with other atoms, a more stable configuration must be reached, which is why the energy of the molecule is less than the energy of the individual atoms, for this to happen in general, electrons are shared or lost and gained in each atom, depending on the electronegative of the same.
If we analyze an atom within the molecule, its last shell is full, in the case of atoms with few electrons in this shell, they are lost and in the case of many electors in this shell, it gains electrons to have eight (8) in total.
When reviewing the different answers, the correct one is:
* The third shell would be empty, so the eight electrons on the second level would be the outermost after the atom lost one electron
Answer: It’s B
Explanation:
a variable that is changed by the researcher is called ___
Antarctica's landscape is proof that ____.
A. a large amount of water does not make a continent habitable
B. it has the highest levels of precipitation in the world
C. humans cannot survive at extremely high altitudes
D. a continent covered in snow can be one of the driest on earth
Answer:
The answer to the equation is B hope this helps:)
Answer:
D. a continent covered in snow can be one of the driest on earth
Explanation:
The adult house fly lives for only about 1 month, or 8 x 10^-2 y. The oldest recorded age of a tortoise was 1.8800 x 10^2 y. What is the difference between these two ages?
187.92 years
8*10^-2= .08
1.88*10^2= 188
188-.08=187.92
Which statement is true of an electromagnetic wave?
A. The wave needs particles in matter as a medium.
B. The wave travels through electric and magnetic fields.
C. The wave is caused by vibrating particles of matter.
D. The wave carries mechanical energy.
Answer:
C
Explanation:
Electromagnetic waves are produced by the vibration of charged particles.
The true statement of an electromagnetic wave is option c. The wave is caused by vibrating particles of matter.
What is an electromagnetic wave?It is the wave that should be developed that leads to the vibration that lies between the electric field and a magnetic field.
Here EM waves should be composed for oscillating magnetic and electric fields.
Hence, the option c is correct.
Learn more about wave here: https://brainly.com/question/19053849
A 5-meter lever has a 4-meter long input arm. If an output force of 500 newtons is attached at one end of the
lever, how much input force must be applied to move the 500-newton output force?
Answer:
125N
Explanation:
500/4=125N
A 14-gauge copper wire of diameter 1.628 mm carries a current of 12.5 What is the potential difference across a 2.00 - m length of the wire? *p=1.47x10^-8
Answer:
[tex]V=1.76\times 10^{-4}\ V[/tex]
Explanation:
Given that,
The diameter of a wire, d = 1.628 mm
Radius, r = 0.814 mm = 0.000814m
Current, I = 12.5 mA
The length of the wire, l = 2m
The resistivity of the wire, [tex]\rho=1.47\times 10^{-8}\ \Omega-m[/tex]
We need to find the potential difference across the wire. We know that the resistance of the wire is given by :
[tex]R=\rho\dfrac{l}{A}[/tex]
Also, V = IR
[tex]\dfrac{V}{I}=\rho\dfrac{l}{A}\\\\V=\dfrac{\rho l I}{A}\\\\V=\dfrac{1.47\times 10^{-8}\times 2\times 12.5\times 10^{-3}}{\pi \times (0.000814)^2}\\\\V=1.76\times 10^{-4}\ V[/tex]
So, the potential difference of the wire is [tex]1.76\times 10^{-4}\ V[/tex].