the speed at which the gravity pulls a freely falling object is known as it's acceleration due to gravity, it is represented by the letter (g)
the acceleration due to gravity on Earth is 9.8m/s²
What is the wave where the oscillation is perpendicular to the direction
of motion.
Each degree on the Kelvin scale equals how many degrees on the Celius scale
Answer:
0° C = 273.15 K
0 K = - 273.15° C
Explanation:
Hello there!
The Kelvin temperature scale refers to the absolute temperature scale. The division in the Kelvin scale is equal to a degree on the Celsius scale only it's difference is zero
The Celsius scale of zero (0°C) is the freezing point.
0 K is Absolute Zero.
•°• 0 K = - 273.15° C
0° C = 273.15 K
Furthermore, this is what I would like you to know about this scales;
The Kelvin scale is used for very low or very high temperatures where water is not involved.
Note:
The boiling point of water is 100°C.
I hope this helps you to understand more on this scales. Have a nice studies.
This Subject is Actually Science So Am Stuck On This Question
Q: Objects in orbit appear to be weightless because
Options:
a. they are weightless
b. they are in free fall
c. their mass becomes zero
d. the applied gravity force becomes zero
Answer:
b. they are in free fall
Explanation:
-
7. The speed of a wave is 65 m/s. If the wavelength is 0.8 meters, what is the frequency of the wave?
Explanation:
velocity = wavelength × frequency
65 = 0.8 × frequency
frequency = 65/0.8=81.25Hz
FM radio means what?
Question 3 options:
Frequency measured in megahertz
Frequency measured in kilohertz
Frequency measured in hertz
Frequency measured in gigahertz
Answer:
frequency measured in megahertz
A force of 600N is applied to an object that accelerates at a rate of 15m/s/s. What is the mass of the object?
Answer:
The answer will be it has a mass of 40 kg.
Explanation:
Because Force = mass x acceleration or F = m a, we can say Force divided by mass or F/a = m or mass so 600 divided by 15 equals 40 kg.
which of the following is not a latent heat gain source
Why wave energy is different from other types of energy? Describe in your own words
Answer:
it is the most concentrated form of renewable energy on earth, with power density much higher than that of wind and solar energy.
Explanation:
The advantages of wave energy include being free, sustainable, renewable, and producing zero waste. Therefore, it can contribute to reducing our carbon footprint. It is also unique since it is the most concentrated form of renewable energy on earth, with power density much higher than that of wind and solar energy.
The frequency of a wave does not change as it passes from one medium to another.
What will most likely happen if a light wave moves from the air into a solid?
The wavelength of the light wave will increase.
The speed of the light wave will decrease.
The wavelength of the light wave will remain the same.
The speed of the light wave will remain the same.
Answer:
The Speed Of The Lightwave Will Be Modified As It Enters Another Medium (State Of Matter)
Explanation:
As The Lightwave Enters The Medium The Light Will Bend Toward The Normal E.g. Incident Ray Which Indicates It Will Modify It's Speed But When it Leaves The Medium It Will Increase Until As It Leaves The Sold
Answer:
B
Explanation:
its B on Edge
If a small appliance is rated at a current of 18 amps and a voltage of 120 volts, what is the
power rating of the appliance?
2160 watts
thank you
Hope this helped
Have a good day
(Stop flagging my anwsers I got to many I’m gonna get banned)
Rilee Cartner
Question 8
What is the mass of an object if it takes a net force of 2,400 Newtons
to accelerate it at a rate of 60 m/s2?
Answer:
It has a mass of 40 kg.
Explanation:
Because Force = mass x Acceleration or F = m a, we could say that the mass is force/acceleration which in your case is 2,400/60 which equals 40 kg.
if lens behave like prism and disperse light then why person using glass on eye can't see colour being dispersed?
Answer:
A prism can disperse light into different colors when the light enters the prism at a "fixed" angle - light coming in, perhaps, thru a narrow slit
If light can enter at all angles, then dispersion occurs at all angles and no dispersion can be seen
"The greater the height of an object, the *BLANK* its gravitational potential energy."
please help thank u!
Answer:
the greater the height of an object the *greater* its gravitational potential energy
greater
The distance between a Point on one wave and the same point on the next cycle of the wave
Answer:
wavelength
Explanation:
the definition of wavelength is the distance between two consecutive waves. with that being said, the point from the crest of one wave to the crest of another would be wave length
What is the term for trade without barriers, tariffs, or quotas?
A. Free trade
B. Trade deficit
C. Surplus trade
D. Trade bloc
Breifly describe how traits are passed down from human parents to their offspring. In your description, be sure to include the terms gene, chromosome, and meiosis.
Answer:
Parents pass on traits or characteristics, such as eye colour and blood type, to their children through their genes
Explanation:
two thin lenses of focal length 10cm and 20cm are placed in contract calculate the effective power of the combination
Answer:
20/3
Explanation:
We can use the formula : 1/R1 + 1/R2 = 1/f here
Therefore 1/10 + 1/20 = 3/20
And as it is 1/f its reciprocal will be 20/3
A big pendulum goes back and forth
once every 18.9 s. What is the
length of the pendulum?
(Unit = m)
T = 2π√(L/g)
For earth , g ~ 10
18.9 = 2×3.14 √(L/g)
9 = L/g
L = 90 metres
Answer:
88m
Explanation:
T=2π*[tex]\sqrt{L/g}[/tex]-->Τ/2π=[tex]\sqrt{L/g}[/tex]-->18.9/2π=[tex]\sqrt{L/g}[/tex]-->3=[tex]\sqrt{L/g}[/tex]-->3^2=L/g-->9=L/9.8
so L=9*9.8-->L≈88m
When in a crowd, individuals may lose awareness of their own sense of individuality, and as a result may avoid taking responsibility or action.
True or false ?
A car moving south speeds up from 10 m/s to 40 m/s in 15 seconds. What is the car’s acceleration?
Explanation:
Initial velocity ( u ) = 10 m/s
Final velocity ( v ) = 40 m/s
Time taken ( t ) = 15 second
Now
[tex]acceleration = \frac{v - u}{t} \\ = \frac{40 - 10}{15} \\ = 2m /{s}^{2} [/tex]
Calculate the useful output energy of an electric motor which is 70% efficient if it uses 600 J of electrical energy.
Answer:
420J
Explanation:
The formula (useful output ÷ total output) × 100 is used. We need to find the the useful output. So:
(useful ÷ 600) × 100 = 70(%)
We rearrange the formula so that 'useful' is the subject of the equation.
useful ÷ 600 = 0.7 {70 ÷ 100}
useful = 0.7 × 600
useful = 420J
The fundamental frequency of a musical note is 330Hz. Which harmonic is this?
Answer:
it is a type of even harmonic
If a electrician measures the current of a circuit to be 100 Amps and the circuit is only designed to have a current of 80 Amps, which of the following is the best explanation of what has happened to the circuit ?
A. a There are too many batteries in the circuit.
B. There are too many resistors in the circuit.
C. A battery in the circuit is missing.
D. A resistor in the circuit is missing.
There are too many batteries in the circuit, which increased the emf of the circuit and in turn increased the current in the circuit.
Current in the circuitThe current in the circuit is determined by applying Ohms law as shown below;
V = IR
where;
I is the currentV is the voltageR is the resistanceI = V/R
At a constant resistance of the circuit, the current in a circuit will increase when the emf of the circuit increases.
Thus, we can conclude that, there are too many batteries in the circuit, which increased the emf of the circuit and in turn increased the current in the circuit.
Learn more about current in circuit here: https://brainly.com/question/13195529
Answers for these 2 please
The current in the wires of a circuit is 120.0 milliAmps. If the
resistance of the circuit were halved (i.e., reduced to one-
half the original value) (with no change in voltage), then its
new current would be
milliAmps.
If the resistance of the circuit were halve and the voltage remains constant, the new current in the circuit would be 240 mA.
Current in the circuit
The current in the circuit is inversely proportional to the resistance of the circuit. This implies that the increase in the resistance of the circuit decreases the current in the circuit.
V = IR
At constant voltage;
I₁R₁ = I₂R₂
when, R₂ = 0.5R₁
I₂ = I₁R₁ /R₂
I₂ = I₁R₁ /0.5R₁
I₂ = 2I₁
I₂ = 2 x 120 mA
I₂ = 240 mA
Thus, if the resistance of the circuit were halve and the voltage remains constant, the new current in the circuit would be 240 mA.
Learn more about resistance of circuit here: https://brainly.com/question/1851488
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A truck travelling at 22.5 m/s decelerates at 2.27 m/s2. (a) How much time does it take for the truck to stop? (b) How far does it travel while stopping? (c) How far does it travel during the third second after the brakes are applied?
We can use the "suvat" method
s is displacement
u is initial velocity
v is final velocity
a is acceleration
t is time
We substitute in what we know...
s = ?
u = 22.5 (the speed/velocity the trucks is initially)
v = 0 (the truck comes to a stop)
a = -2.27 (negative because it is decelerating
t = ?
[tex]\text{suvat formulae}:\\v = u + at\\s = ut + \frac{1}{2}at^2\\v^2 = u^2 + 2as\\s = \frac{v+u}{2}t\\s = vt - \frac{1}{2}at^2[/tex]
We have [tex]u[/tex], [tex]v[/tex], [tex]a[/tex] and we want to find the time for how long it takes the truck to stop.
We can use [tex]v = u + at[/tex]
[tex]v = u + at\\0 = 22.5 - 2.27 \times t\\\frac{-22.5}{-2.27} = t\\t = 9.91...\ \text{s}[/tex]
To find the distance (displacement), we can use [tex]s = ut + \frac{1}{2}at^2[/tex]
[tex]s = ut + \frac{1}{2}at^2\\s = 22.5 + \frac{1}{2} \times -2.27 \times 9.91^2\\s = -88.9661935\ \ \text{(we make it positive since you can't have negative distance)}\\s = 88.97...\ \text{m}[/tex]
To find the distance travelled 3 seconds after breaks are applied;
We just use the same formula, but with [tex]t = 3[/tex]
[tex]s = ut + \frac{1}{2}at^2\\s = 22.5 \times 3 + \frac{1}{2} \times -2.27 \times 3^2\\s = 12.285\ \text{m}[/tex]
The way roughness of surfaces affects kinetic friction is called the __________ of kinetic friction?
Answer:
coefficient
Explanation:
what is a literature review?
Answer: A literature review consists of an overview, a summary, and an evaluation (“critique”) of the current state of knowledge about a specific area of research.
Explanation:
A force of 20 N is exerted by an electric field on a test charge of 8.0 x 10² C at a point, P. What is the electric field strength
at point P?
0.004 N/C
Ob
1.6 N/C
Oc
160 N/C
Od
250 N/C
Answer:
the answer is equal to 1.6N/C
What is the chemical formula for sulfur trioxide?
Answer:
Sulfur trioxide is a colourless compound that exists at room temperature either as a volatile liquid or in any of three allotropic solid forms. What is SO2 and SO3? SO2 is sulfur dioxide which is a gaseous compound formed from sulfur and oxygen atoms. The melting point and the boiling point are -71℃ and -10℃respectively.
Explanation: