Answer:
at the top of the ramp before dropping in
Explanation:
Potential energy is basically the build up of energy before it's released.
A lemon drops from a tree and falls to the ground 3.5 meters below. Determine:
a. How much time does it take for the lemon to reach the ground?
b. What is the lemon´s velocity just before it hits the ground (Vf)?
what is photoelectric effect
[tex]{\underbrace{\sf{PHOTO-ELECTRIC~EFFECT }}}[/tex]
The photoelectric effect is a phenomenon in which electrons are ejected from the surface of a metal when light is incident on it. These ejected electrons are called photoelectrons. It is important to note that the emission of photoelectrons and the kinetic energy of the ejected photoelectrons is dependent on the frequency of the light that is incident on the metal’s surface.
Answer:
Photoelectric effect is the phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.
Question 8 of 35
A car has a mass of 1000 kg and is travelling at a speed of 26 m/s. Calculate the kinetic energy of the
car. Use the word equation below to help you.
kinetic energy = 0.5 x mass x (speed)?
Answer:
338,000 JExplanation:
The kinetic energy of an object can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\[/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2} \times 1000 \times {26}^{2} \\ = 500 \times 676 \\ = 338000[/tex]
We have the final answer as
338,000 JHope this helps you
7. The______
is used for short approaches from the rough and fairways of less than 125 yards.
No. 4 iron
No. 7 wood
putter
pitching or sand wedge
Answer:
Putter
Explanation:
I looked it up. It said golf club but putter is the same thing I believe. :)
Answer:
pitching or sand wedge
Explanation:
his club can also be used to get out of sand traps.
A driver without a seat belt getting thrown from the car in a collision is an example of Newton’s?
1. Starting today. I will now change my behavior/s like ______________ because _________________
2. As an adolescent, I promise that _________
3.changes happening during puberty stage are ____________
4. I enjoy the puberty stage because _____________
Kukumplituhin nyo lang po yan base po sainyo
SALAMAT ❤️
Answer:
be mature, it's the only way to be called independent, I will help my parents with doing chores, you will meet new friends
Explanation:
it's just my own understanding
Answer:
1eating junk food
2 I will be a good girl
briefly explain about electrophorus
Answer:
a device for repeatedly generating static electricity by induction.
Explanation:
MY PAPER IS DUE IN AN HOUR!!!
Your challenge- Write a paper on how to build, construct, and engineer a faster roller coaster. You essay must contain 5 paragraphs minimum. Each paragraph must be 3 sentences minimum.
Potential energy, Kinetic energy, Thermal energy and friction, speed, velocity, and acceleration, and the law of conservation of energy must be the main ideas of your paragraphs
Answer:
right about everything real life and doing or you love doing
Explanation:
I did the same thing I got a hundred on it
Please do ( Test your understanding)
Answer:
Just convert the answers down, plug in the numbers and move the decimal to where it needs to be equal to.
Answer:
I have already given answer
Explanation:
see in upper comment there is my answer :)
explain how the composition of a star that will form a billon years in the future will differ the composition of our sun.
Answer:
Explanation:
Basically the star slowly burns its hydrogen into Helium. Depending on the mass, the star will have a turbulent core where the Helium will be fully mixed or a radiative core where the helium will settle at the centre (remember it's heavier than Hydrogen). The second case is what happens in the Sun.
CAN YOU PLS CHECK IF ITS CORRECT I'LL MARK YOU BRAINLIST
i think it looks good
yea it correct
BTW yw if it's right
Answer:
-4000
Explanation:
jptjpdjsjsjsfbsjjdbabdjzjwjdjadjzjejxjaA
5) Match the following.
1) workstation
2) Network interface card
3) hub
4) server
Hope this helped you- have a good day bro cya)
actiong-reaction of the bat hits the ball.
Answer:
according to newtons third law ,the force exerted.by the bat hitting the ball will be equal in magnitude . but opposite in direction of the force the ball exerts on the bat2.) Explain why the starting angle doesnt impact the time it takes the pendulum to swing back and forth?
The starting angle θθ of a pendulum does not affect its period for θ<<1θ<<1. At higher angles, however, the period TT increases with increasing θθ.
The relation between TT and θθ can be derived by solving the equation of motion of the simple pendulum (from F=ma)
−gsinθ=lθ¨−gainθ=lθ¨
For small angles, θ≪1,θ≪1, and hence sinθ≈θsinθ≈θ. Hence,
θ¨=−glθθ¨=−glθ
This second-order differential equation can be solved to get θ=θ0cos(ωt),ω=gl−−√θ=θ0cos(ωt),ω=gl. The period is thus T=2πω=2πlg−−√T=2πω=2πlg, which is independent of the starting angle θ0θ0.
For large angles, however, the above derivation is invalid. Without going into the derivation, the general expression of the period is T=2πlg−−√(1+θ2016+...)T=2πlg(1+θ0216+...). At large angles, the θ2016θ0216 term starts to grow big and cause
Everyday examples of buoyancy force
Answer: A person with a life vest floating on water, Ship floating on the ocean, Helium balloon rising in the air, etc.
Explanation: Cause I said so uwu
Can someone help me with this? (The answer marked in red text is a incorrect answer)
I think the answer is A
Explanation:
the bus has more kg than the car so. the bus need to stop first
Please help pleeeeeeaaaassseeee help
During rubbing, [tex]^E^L^E^C^T^R^O^N^S[/tex] are transferred between the woolen cloth and the balloon.
Hope this helps!
[tex]GraceRosalia[/tex] here to help
Hiệu điện thế U=10 V được đặc vào giữ hai đầu một điện trở có giá trị R=25 Q cường độ dòng điện trở bằng bao nhiêu
Answer:
Hiệu điện thế U=10 V được đặc vào giữ hai đầu một điện trở có giá trị R=25 Q cường độ dòng điện trở bằng bao nhiêu
describe a good speech choir.
Speech choirs are performance groups that recite speeches in unison, often with elements of choreography and costuming to help bring the speech to life. Much like musical choirs, dynamic -- volume -- range, expression and accurate coordination of syllables are all important for a successful performance.
1. A net force of 15 N is applied to a cart with a mass of 2.1 kg.
a. What is the acceleration of the cart?
b. How long will it take the cart to travel 2.8 m, starting from rest?
Answer:
acceleration=force*mass
a=fm
a=15*2.1
a=31.5
acceleration is 31.5
hope it helps
.
O
Allison drove 150 miles for 2.5 hours.
Benjamin drove for 2.73 hours and traveled 175 miles.
• Lily drove 160 miles for 2.58 hours.
• George drove for 2.46 hours and traveled 155 miles.
Which person drove at the fastest constant speed?
The formula for calculating speed: Speed = Distance/Time
Answer:
Benjamin was fastest
Explanation:
Allison- 150/2.5= 60mph
Benjamin- 175/2.73= 64.1
Lily- 160/2.58= 62.01
George- 155/2.46= 63.008
You travelled from Ras al Khaimah to Abu Dhabi by road in 3 hour. The distance between the two cities is 270 km, whereas the aerial (by air) distance is 210 km.
note: Aeroplane always flies in straight line.
Please choose one of these answers:
A) average velocity is 60 km/h
B) average velocity is 70 km/h
C) average velocity is 80 km/h
D) average velocity is 90 km/h
A refrigerator is 3cm by 3cm by 6cm wat is the volume of the refrigerator?
Explanation:
volume= 3cm×3cm×6cm=18cm3
calculating velocity: How long would it take for a person to sprint from the 0m line to the 100m line if they are traveling forward at 6m/s?
-
Please do show me how you solved it
Answer:
16.7s
2x10^1 s (if you need a 1 significant digit answer)
Explanation:
The formula for average velocity is
Vavg = Δd/Δt
Fill in the known values
6m/s = 100m/Δt
Rearrange the equation
Δt = 100m/6m/s
Δt = 16.7s
note: this answer assumes that the person travels at a constant 6m/s (the person does not slow down or speed up)
find the components to write this vector in unit vector notation: 63.5 A please help
Vector is perpendicular to x axis or i component.
Hence i component is 0
j component is 63.5
[tex]\\ \sf\longmapsto \overrightharpoon{A}=0\hat{i} +63.5\hat{j}[/tex]
. In a wave, …………………… is carried from one place to another.
Answer:
which wave sound wave or water wave
Which gas law describes the relationship between temperature and pressure at a constant volume?
Boyle’s law
Charles’s law
Gay-Lussac’s law
combined gas law
Answer:
Charles's law
Explanation:
A lamp is labelled '230 V, 100 W'. How many joules of electrical energy is changed to thermal energy and light if the lamp is switched on for 2 hours?
Given;
V = 230V
Power, P = 100W
time, t = 2hrs = 7200s
from,
P = IV
and Energy, E= Pt
E = 100*7200
E = 720000 Joules
E = 720KJ
Answer:
Formula E(J) = P(W) × t(s)
3600 Seconds in an hour
7200 seconds in two hours.
watts = 100
100 x 7200 = 720000
Explanation:
Watts to joules calculation
The energy E in joules (J) is equal to the power P in watts (W), times the time period t in seconds (s):
E(J) = P(W) × t(s)
Energy cannot be created or destroyed, only converted from one form to another. These conversions can be shown in Sankey diagrams. Efficiency is a measure of how much useful energy is converted. Attachment 1
Modern energy-saving lamps and LEDs (light-emitting diodes) work in a different way. They transfer a greater proportion of electrical energy as light energy. Attachment 2
From the diagram, you can see that much less electrical energy is transferred, or 'wasted', as heat energy from the energy-saving lamp. It's more efficient than the filament lamp.
Calculating efficiency
The efficiency of a device, such as a lamp, can be calculated:
efficiency = useful energy out ÷ total energy in (for a decimal efficiency)
or
efficiency = (useful energy out ÷ total energy in) × 100 (for a percentage efficiency)
The efficiency of the filament lamp is 10 ÷ 100 = 0.10 (or 10%). This means that 10 per cent of the electrical energy supplied is transferred as light energy (90 per cent is transferred as heat energy).
The efficiency of the energy-saving lamp is 75 ÷ 100 = 0.75 (or 75 per cent). This means that 75 per cent of the electrical energy supplied is transferred as light energy (25 per cent is transferred as heat energy).
Note that the efficiency of a device will always be less than 100 per cent. Occasionally the power is shown in W instead of the energy in J. The equations are the same – just substitute power for energy:
efficiency = useful power out ÷ total power in (for a decimal efficiency)
or
efficiency = (useful power out ÷ total power in) × 100 (for a percentage efficiency)
This is the Sankey diagram for a typical energy-saving lamp:
you can find the resistance using this formula
R = V ÷ I
where; V is the potential difference in volts, V
I is the current in amperes (amps), A
R is the resistance in ohms, Ω
A wave with a wavelength of 2m has a frequency of 10Hz. What is its speed?
Answer:
Below
Explanation:
To find the wave speed of a wave you can use this formula :
wavespeed (v) = (frequency) x (wavelength λ)
Plug in our values :
v = (10Hz) x (2m)
v = 20 m/s
Hope this helps!
Now, seriously !
There's a stream of objects flowing past you.
Ten of them pass you every second.
Each one is 2m long.
Don't you think you can figure out how fast they're flowing ?
pls an answer!
fast!!
Answer:
letter C
Explanation: