Answer:
Temperature measures the motion of molecules, and heat is the energy of that motion.
Explanation:
Answer:
Temperature measures the motion of molecules, and heat is the energy of that motion.
Explanation:
Which of the following best illustrates the work-energy theorem?
A. You push on a box and it moves.
B. You look at an object across the room.
C. You hold an ice cube and it melts.
D. You walk toward a wall and it stops you.
What makes a model not useful?
A.) if it is in proportion with the object it represents
B.) if it is made of a different material than the object it represents
C.) if it is not the same mass of the object it represents
D.) if it is out of proportion with the object it represents
A 75.0 Ohm resistor uses 0.285 W of power. What is the voltage across the resistor?
Answer:4.62
Explanation:
Acellus
what is 2 plus 2 and 1 plus 1
Answer: 6
Explanation:
Have an awesome amazing day
Answer:
2 plus 2 = 4 AND 1 plus 1 = 2
Explanation:
I guess combine both equations if your detailed instructions allow.
HELP LOOK AT THE PICTURE
Answer:
Resistance, R = 2.5 Ohms
Explanation:
Given the following data;
Voltage = 10 V
Current = 4 A
To find the resistance;
Ohm's law states that at constant temperature, the current flowing in an electrical circuit is directly proportional to the voltage applied across the two points and inversely proportional to the resistance in the electrical circuit.
Mathematically, Ohm's law is given by the formula;
[tex] V = IR[/tex]
Where;
V represents voltage measured in voltage.
I represents current measured in amperes.
R represents resistance measured in ohms.
Making resistance, R the subject of formula, we have;
[tex] R = \frac {V}{I} [/tex]
Substituting into the equation, we have;
[tex] R = \frac {10}{4} [/tex]
Resistance, R = 2.5 Ohms
Therefore, the resistance of the resistor in the electrical circuit is 2.5 Ohms.
______ is a chemical reaction between an acid and a base that forms a salt and water. Group of answer choices Neutralization Dissociation Titration Ionization
Answer:
neutralization
Explanation:
this is because
acid + base ---> salt + water
In the center of the Milky Way galaxy is a
A
Answer:
a super massive blackhole
If you have a spaceship that can go 20% of the speed of light, how long would it take to travel 200 light-years?
Answer:
1498962290
Explanation:
A thermometer has a scale which starts at -10 Celcius and ends at 110 Celcius. What is the value of the lower fixed point and of the upper fixed point of the scale?
Explanation:
The Kelvin, Celsius, and Fahrenheit scales are the three temperature scales that are most widely used. In most physical experiments the Celsius scale is used to take common measurements, but the Kelvin scale is used for most calculations.
A baseball player catches a 200 gram baseball which is moving
horizontally at a speed of 42.1 m/s. Determine the force which she must
apply to the baseball if her mitt recoils a horizontal distance of 29.2 cm.
A.) 177 N
B.) 0.57 N
C.) 607 N
D.) 57290 N
Please help solve
Did you get the answer? I need it
The period of a wave is 20 ms (milliseconds) and its wavelength is 4 cm. Calculate:
a) The frequency of the wave
b) The velocity of the wave.
Answer:
A. 50 Hz
B. 2 m/s
Explanation:
We'll begin by converting 20 ms to s. This can be obtained as follow:
1000 ms = 1 s
Therefore,
20 ms = 20 ms × 1 s / 1000 ms
20 ms = 0.02 s
Next, we shall convert the value of the wavelength (i.e 4cm) to m. This can be obtained as follow:
100 cm = 1 m
Therefore,
4 cm = 4 cm × 1 m / 100 cm
4 cm = 0.04 m
A. Determination of the frequency.
Period (T) = 0.02 s
Frequency (f) =?
f = 1 / T
f = 1 / 0.02
f = 50 Hz
Therefore, the frequency of the wave is 50 Hz
B. Determination of the velocity.
Wavelength (λ) = 0.04 m
Frequency (f) = 50 Hz
Velocity (v) =?
v = λf
V = 0.04 × 50
v = 2 m/s
Therefore, the velocity of the wave is 2 m/s
when you hear sounds made by a speaker, it is because air molecules have moved from the speaker to the ear
TRUE OR FALSE
How are light waves produced
Answer:
Electromagnetic waves are created by oscillating charges (which radiate whenever accelerated) and have the same frequency as the oscillation. Since the electric and magnetic fields in most electromagnetic waves are perpendicular to the direction in which the wave moves, it is ordinarily a transverse wave
Explanation:
Answer:
Electromagnetic waves are created by oscillating charges (which radiate whenever accelerated) and have the same frequency as the oscillation. Since the electric and magnetic fields in most electromagnetic waves are perpendicular to the direction in which the wave moves, it is ordinarily a transverse wave
Explanation:
4.- Una vagoneta de 1000 kg de peso parte del reposo en el punto 1 y desciende, sin rozamiento, por la vía indicada en la figura. A) Calcular la fuerza que la vía ejerce sobre la vagoneta en el punto 2, donde el radio de curvatura es de 6 m. B) Determinar el mínimo valor del radio de curvatura en el punto 3 para salvar dicho punto
Answer:
A) 49,050 N
B) 16 m
Explanation:
Question:
El dibujo de la pregunta se obtiene de un documento titulado "TRABAJO DIVERSO Y ENERGÍA" que se encuentra en línea y se presenta aquí.
La masa dada del vagón, m = 1,000 kg
La altura del punto en el que descansa el vagón, punto 1, h₁ = 12 m
A) El radio en el punto 2, el punto más bajo, R = 6 m
La fuerza, 'N', que la vía ejerce sobre el vagón en el punto 1 viene dada por la siguiente relación;
N = El peso del vagón + La fuerza de movimiento del vagón
∴ N = m × g + m × a
Dónde;
g = La aceleración debida a la gravedad ≈ 9,81 m / s²
a = La aceleración del vagón
Observamos que para el movimiento circular, la fuerza de movimiento del vagón, m × a = La fuerza centrípeta que actúa sobre el vagón = m × v² / R
∴ m × a = m × v² / R
Dónde;
v² = La velocidad del vagón en el punto 2 = 2 · g · h₁
Por lo tanto;
N = m × g + m × a = m × g + m × v² / R = m × g + m × 2 · g · h₁ / R
∴ N = 1000 × 9,81 + 1000 × 2 × 9,81 × 12/6 = 49,050
La fuerza que ejerce el vagón en el punto 2, N = 49,050 N
B) En el punto 3, tenemos;
N = m · g - m · a₃
La fuerza centrípeta en el punto 3, m · a₃ = m · v₃² / R₃
∴ La altura en el punto 3, h₃ = 4 m
El cuadrado de la velocidad en el punto 3, v₃² = 2 · g · (h₁ - h₃)
Para que el vagón esté seguro en el punto 3, la fuerza de la vía sobre el vagón, N = 0 para que el vagón permanezca en la vía actuando
Por lo tanto;
N = m · g - m · a₃ = 0
m · g = m · a₃ = m · v₃² / R₃ = m · (2 · g · (h₁ - h₃)) / R₃
∴ R₃ = (2 · g · (h₁ - h₃)) / g = (2 · (h₁ - h₃)) = 2 × (12 - 4) = 16
El radio de curvatura en el punto 3 para que el punto sea seguro es R₃ = 16 m.
Why would African Americans like the song "Respect"?
A. It represented African Americans and their struggle for equality.
B. It represented African Americans and their success in achieving
equality.
C. It represented African Americans and their fight for African
independence.
D. It represented African Americans and their struggle to end slavery.
B. It represented African Americans and their struggle for equality.Answer:
Explanation:
A 10kg box accelerates forward at a rate of 12 m/s^2. What is the force acting on the box?
120N
N8'0
ON
Answer:
120N
Explanation:
Newton's second law formula: F= ma
given that m = 10 kg, a = 12 m/s^2
F = ma = 10 kg * 12 m/s^2 = 120 kgm/s^2 = 120 N
The force acting on the box is equal to 120N. Therefore, option (A) is correct.
What is Newton's second law of motion?According to Newton's 2nd law of motion, The force acting on an object is equal to mass times the acceleration of that object.
This law tells that the acceleration of a moving body depends upon two variables in which one is the mass of the object which is constant while the other is the force acting on that object. The acceleration of an object increases as the mass of the object is less.
The mathematical equation of the second law of motion can be written as:
F = ma
Given, the mass of the box, m = 10 Kg
The acceleration of the box, a = 12m/s²
We can find the force acting on the box by putting the values a and m:
Force acting on the box, F = 10 ×12 = 120 N
Therefore, the force acting on the box is equal to 120 newtons.
Learn more about Newton's 2nd law of motion, here:
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You are a drop of water going through the water cycle. Where doyou go?How do you get there? What processes do you go through?Include at least three phases of the water .
Answer:
If I were a drop of water and present in the ocean or any other aquatic system I should have moved in the water cycle as due to heats the water of the aquatic system such as the ocean becomes hot and evaporated turning into vapour, a gaseous phase of water.
Then vapour colloids with cooler air, and become cooler and convert into drops of water again which is called condensation. Drops of water again get back to the earth surface it can be in the form of rain, snow (ice form of water) termed as precipitation.
The three phases of the water cycle are
---> evaporation ---- > condensation -----> precipitation----
A 0.017 g coin sliding to the right at 0.255 m/s makes an elastic head-on collision with a 0.040 g coin that is initially at rest. After the collision, the 0.017 g coin moves to the left at 0.108 m/s. Find the final velocity of the other coin.
Answer:
[tex]\approx 0.154\:\mathrm{m/s}[/tex]
Explanation:
In all collisions, whether elastic or inelastic, momentum must be conserved. Therefore, we can write an equation using the conservation of momentum:
[tex]m_{c1}v_{c1,i}+m_{c2}v_{c2,i}=m_{c1}v_{c1,f}+m_{c2}v_{c2,f}[/tex]
Solving for [tex]v_{2c,f}[/tex]:
[tex]0.000017\cdot 0.255+0.000040\cdot0=0.000017\cdot (-0.108)+0.000040\cdot v_{c2,f},\\v_{c2,f}\approx \boxed{0.154\:\mathrm{m/s}}[/tex]
*Notes:
-It's important to convert g to kg, as kg is the SI unit of mass
-The negative sign in a velocity measure represents direction
-Since the velocity we solved for is positive, it implies that the direction is to the right
I WILL MARK YOU THE BRAINLIEST NO LINKS
If you turn on a radiator, heat will diffuse throughout the room. What does this mean?
The heated molecules will cool down.
The temperature will become unbearably hot.
The heat will spread out.
The heat will be concentrated in one area of the room.
Answer:
throughout the room. What does this mean? The heat will spread out.
Explanation:
thank me later
If you increase the amount of spinach you eat, then you will increase the iron in your blood. What's the dependent variable?
The quantity of iron in your blood is the dependent variable because it is influenced by how much spinach you consume. The amount of spinach you consume will act as the independent variable because it doesn't require iron in any way.
What is the dependent variable?A dependent variable is one whose values can be determined by testing in a scientific experiment. It is clear that the dependent variable depends on the independent variable. While a result, we can now see and note changes in the dependent variable as the experimenter modifies the independent variable.
Given:
Increase the amount of spinach you eat, then you will increase the iron in your blood,
Write the equation for the above phrase as shown below,
The amount of iron = variable × the amount of spinach
y = ax
here, y is The amount of iron and x is the amount of spinach
Thus, the dependent variable is the quantity of iron.
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What would be the Elastic Potential Energy (EPE) stored in a spring with a constant k = 200 N/m that is pulled to stretch 0.45m?
2,025 J
2,025 J
90 J
90 J
40.50 J
40.50 J
20.25 J
Answer:
During the summer, oxygen is supplied by surface winds. M/NPT 16 to 26 0.14 to 0.45 m 1/ 77.80 $ 28 Phone: 418 81-1 Fax: 418 81-2882 SZ5-2025 SZ22-200 SZ2-250 SZ24-00 12.5 x 60 12.5 x 60 12.5 x 60 8 x 10 10 x 15 10 x 20 15 x HI-950 can take measures between 0.1 C to 999.9 C/ F. K, J & T-type: The HI-9551
(Hope this is what you're asking for)
Hope this helps Have a good day
An astronaut weighs 200 N on the Moon where gravity is 1.62 m/s/s. Find his weight on Earth. HELP PLEASE FAST
Answer:
the weight of the astronaut on Earth is 1209.88 N
Explanation:
Given;
weight of the astronaut, W = 200 N
acceleration due to gravity on moon, g = 1.62 m/s²
Apply Newton's second law of motion to determine the mass of the astronaut;
F = ma = mg
m = F/g
m = 200 / 1.62
m = 123.457 kg
The weight of the astronaut on Earth is calculated as follows;
F = mg
where;
g is acceleration due to gravity on Earth = 9.8 m/s²
F = 123.457 x 9.8
F = 1209.88 N
Therefore, the weight of the astronaut on Earth is 1209.88 N
If a 50 kg person is running at a rate of 2 m/s, the person’s momentum is
_____________ kg • m/s.
Can anybody help with this GCSE physics question?
Answer:
[tex] volume = 18.45 \times 18.45 \times 18.45 \\ = 0.00000628 \: {m}^{3} \\ mass = density \times volume \\ = 8.0 \times {10}^{3} \times 0.00000628 \\ = 0.05\: kg[/tex]
[tex] \small \boxed{ \boxed { becker}}[/tex]
〰〽
what is the formula of effort
Answer:
Hey mate.....
Explanation:
This is ur answer.....
The formula to calculate force is: force = mass x acceleration, or F = m x a, where force and acceleration have both magnitude and direction.
Hope it helps!
Brainliest pls!
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How does the Doppler effect cause a siren's pitch to increase as it
approaches you?
A. Sound waves are spread out, decreasing wavelength and
increasing frequency.
B. Sound waves are spread out, increasing wavelength and
decreasing frequency.
C. Sound waves are pushed closer together, increasing wavelength
and decreasing frequency.
D. Sound waves are pushed closer together, decreasing wavelength
and increasing frequency.
Answer:
my answer is c
Explanation:
the sound waves get closer together, increasing their frequency. This listener hears the pitch of the siren get higher. As the car speeds away from listener B, the sound waves get farther apart, decreasing their frequency.
A radio wave has a frequency of 3,000,000 Hz and a wavelength of 100m. What is the speed?
Answer:
300,000,000
Explanation:
Use the speed formula
Speed= wavelength x frequency
Two forces each of magnitude 25N acts in opposite direction at the opposite end of a circular ring. If the diameter at the ring is 65cm. Calculate the magnitude of the couple acting on the ring.
Answer:
The magnitude of the couple is 16.25 Nm.
Explanation:
A couple is a force that always produce a turning effect of objects on which it is applied. It has applications in doors, taps, revolving doors etc. Couple is a two equal but opposite force applied on an object.
couple = force x length
From the given question, the couple acting on the ring can be determined as;
couple = 25 x 0.65
= 16.25 Nm
The magnitude of the couple is 16.25 Nm.
Which object is NOT a form of chemical energy?
Answer:
Temperature is the degree or intensity of heat present in a substance or object. Thus temperature is not a form of energy.
Explanation:
Answer:
Temperature
Explanation:
Which object is NOT a form of chemical energy?