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Related Questions
Please help me with this! :)
Answers
Calculate the running costs of a filament lamp with a 60 W bulb and a CFL lamp with a 15 W bulb for 15 hours.
1 kWh costs 10p.
cost = power (kW) × time (hours) × price (per kWh)
Answers
Answer:
the cost of running the bulbs is 11.25p
Explanation:
Given;
cost of running 1 kwh = 10 p
power of filament bulb, P = 60 W
power of the CFL bulb, P = 15 W
time of power consumption, t = 15 hours
Total Energy consumed;
E = (60W + 15W) x 15 hours
E = (75)(15)
E = 1125 Wh
E = 1.125 kWh
Cost of 1.125 kWh = 1.125 x 10p
= 11.25p
Therefore, the cost of running the bulbs is 11.25p
Explain What the core muscles do and why it's important to have a strong set of core muscles.
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Answer: Core muscles protect the spine and keeps it stabilized. Also they can help control movements such as walking and standing. The core helps transfer energy and help us move in different directions. It's important to have a strong set of core muscles.
Explanation:
Answer:
The core muscles stabilize and protect the spine. They help control all movements and make it possible for us humans to walk and stand up right. The core helps us transfer energy, shift our body weight and reach/move in different directions. It is important to have a strong set of core muscles because it makes everyday activities easier.
Explanation:
What happens to the number of daylight hours as Earth moves in its orbit from winter to spring?
Answers
Answer:
The earth is exposed much more during the summer the hours of daylight is increased slightly
Explanation:
Is chochlate milk a element
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Answer:
no
Explanation:
it's a graph
Answer:
It specifically is not a element but it has plenty of elements in it
Explanation:
Help ASAP
Frank uses a bowling ball to demonstrate how energy can cause changes. Which
of the following actions would NOT demonstrate a change caused by applying
energy to the ball?
O He spins the bowling ball with one hand
O He rolls the bowling ball across the floor
O He holds the bowling ball in both hands
He lifts the bowling ball to place it on a shelf.
Answers
Answer:
he holds the ball in both hands
Explanation:
he's not moving the ball
A young man exerted a force of 9,000 N on a stalled car but was unable to move it. How much work was done?
Answers
W=9000*0
W=0
W:Work
F:Force
s:Distance
!!! HELP PLEASE !!!
A group of friends are going bowling. They discuss how ball weight and speed can change the amount of
kinetic energy transferred to the pins.
They can use a 6 pound, 10 pound or 12 pound ball.
They can roll the ball at 10 miles per hour (beginner), 14 miles per hour (intermediate) or 18 miles per hour (professional) speed.
A. Describe a strategy that they could use to transfer the greatest amount of kinetic energy to the pins.
B. Explain the relationship between kinetic energy and strategy that you chose in part A.
C. Draw a model that demonstrates the energy transfers that occurred in the system.
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Answer:
A. you would want to use the 12 ound ball and the 18 mph speed in order to transfer the most kinetic energy
B. KE= 1/2 MV^2 so you would want to maximize both your Mass(weight of the ball) and Velocity(speed of the roll) in order to achive the greatest KE.
C. see image
Explanation:
Full disclosure not totally sure what you are being asked in the last one but I put togethere a rough sketch that is my best guess.
[WASSCE June 2008 Qu 11]
[
A force of 20 N acts at an angle of 30° to the
horizontal. Determine the vertical component
of the force.
A. 17.30 N
B. 11.50 N
C. 10.00 N
D. 7.50 N
[WASSCE Nov 2008 Qu 11
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α=30°
F=20 N
Fh=F*cos(α)
Fv=F*cos(90-α)=F*sin(α) (vertical component of the force F)
Fv=20*0,5=10.00 N
Answer (C)
pls help i’ll give brainliest if you give a correct answer!!
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Answer:
Friction force is the correct answer.
Actually I'm wrong the person who has commented is correct
How could the speed of a car be determined?
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Answer:
try the formula v=s/t
v= velocity
s= speed
t=time
Explanation:
is 468km per minute describing speed or velocity
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why would a bouncing ball eventually stop bouncing?
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1. Friction
2. Gravity
3. Decrease in potential energy
The force of gravity pulls it down, and as the ball falls, its potential energy is converted to kinetic energy. When you drop the ball from a certain height, the potential difference is at its extreme point. When the ball hits the ground, the potential energy naturally decreases, which stops the ball from bouncing after a while.
how many electrons does a neutral atom of the element iron (fe) have?
Answers
Answer:
26 electrons
A neutral iron atom contains 26 protons and 30 neutrons plus 26 electrons in four different shells around the nucleus. As with other transition metals, a variable number of electrons from iron's two outermost shells are available to combine with other elements
Explanation:
hope this helps have a good rest of your night :) ❤
1) Li + ČI>LICI
How many atoms are in this?
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Answer:
2 atoms
Explanation:
A motorist is driving at a constant velocity of 28.0 m/s when he decides to pass a car is in front of him. He accelerates at a rate 2.50 m/s2 for 3.00 seconds while passing the car. What is his velocity at the end of the 3.00 seconds?
Answers
Answer:
Final velocity, V = 35.5m/s
Explanation:
Given the following data;
Initial velocity = 28m/s
Acceleration = 2.5m/s²
Time = 3 seconds
To find the final velocity, we would use the first equation of motion
V = U + at
Where;
V is the final velocity measured in m/s.
U is the initial velocity measured in m/s.
a is the acceleration measured in m/s².
t is the time measured in seconds.
Substituting into the equation, we have;
V = 28 + 2.5*3
V = 28 + 7.5
Final velocity, V = 35.5m/s
A 55 kg skier is at the top of a slope. The vertical distance between start and finish is 10m. (a) What is her Potential Energy? (b) How fast is she moving at the bottom of the hill?
Answers
Explanation:
Given that,
Mass of a skier, m = 55 kg
The vertical distance between start and finish is 10 m.
(a) The potential energy of a skier is given by :
[tex]E=mgh\\\\E=55\times 9.8\times 10\\\\=5390\ J[/tex]
(b) When she reaches the bottom of the hill, the potential energy is converted to kinetic energy. So,
[tex]5390=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2\times 5390}{55}} \\\\v=14\ m/s[/tex]
Hence, her potential energy is 5390 J and at the bottom of the hill she is moving with a speed of 14 m/s.
loop od death cause and effect
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Answer:true
Explanation:
In what two ways can we increase the potential difference?
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Your teacher gives you samples of the following elements. Which sample is shiny but does not conduct heat and electricity well? (DOK 2)
A.
fluorine (F)
B.
silver (Ag)
C.
germanium (Ge)
D.
neon (Ne)
Answers
it does not conduct electricity and heat
Fluorine is the sample which is shiny but does not conduct heat and electricity through it. The flow of electricity requires the flow of electrons or charged particles. Thus, the correct option is A.
What are conductors?
A conductor is a substance, chemical element, or a material which allows electricity and heat to flow through it. In a conductor, the electrical charge carriers which are usually electrons or positive and negative ions, move easily from one atom to another atom when a particular amount of voltage is applied.
Fluorine is a shiny element however it does not conduct heat and electricity through it. It is the most electronegative atom and is very reactive in nature. It only gains electrons and does not lose them. And because of this property of fluorine, it restricts the movement of electrons through it and fails to conduct electricity.
Therefore, the correct option is A.
Learn more about Elements here:
https://brainly.com/question/14347616
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Which metric prefix has a decimal form of 0.01?
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Answer:
Centi is the metric prefix for 0.01
Select all of the ways collection areas use to gain water.
Question 1 options:
water evaporates from the collection area
runoff from precipitation
precipitation falls direction into the collection area
Answers
Answer:
runoff from precipitation
precipitation falls direction into the collection area
Explanation:
i took the test
A collection area gains water as runoff from precipitation or precipitation falling into the collection area.
A collection area is an area set aside for the purpose of collecting water. This water could come into the collection area as precipitation or as surface run off.
Hence, a collection area could gain water via;
runoff from precipitationprecipitation falling into the collection areaOut of the options in the questions, these are two ways in which collection areas can receive water.
Learn more about surface runoff: https://brainly.com/question/998881
The mass of an object is the measure of what characteristic of the object?
O A. its volume
OB. the space it occupies
OC, the amount of matter it has
OD. its weight
ANSWER PLZ
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Answer:
C. The amount of matter it has
what are food sorces of iron
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Answer:
liver (but avoid this during pregnancy)
red meat.
beans, such as red kidney beans, edamame beans and chickpeas.
nuts.
dried fruit – such as dried apricots.
fortified breakfast cereals.
soy bean flour.
Explanation:
How can a volcano develop in the middle of a tectonic plate?
Answers
Answer:
Volcanoes that form away from plate boundaries are created by hotspots. A hotspot is an area in the mantle that is believed to be somewhat hotter than the surrounding material. The rising magma from the hotspot can push its way through the crust and burst out at the surface, forming a volcano.
Explanation:
Volcanoes can form in subduction zones, which are regions where tectonic plates are interacting one and plate is sinking beneath the other.
Essay about how volcanoes form.A volcano is a hill or mountain in the shape of a cone that is erected around a fissure in the surface of the earth thru which heated gases, rock fragments, and lava are released. A conical mass grows around the conduit as the solid fragments gather there, becoming progressively larger until it reaches the size of a gigantic volcanic mountain.
Explain what a volcano is.A volcano is an aperture or vent through which magma, tephra (small rocks), or steam are released onto the the planet's surface. Days, weeks, or even years might pass between outbursts of volcanoes.
To know more about : development of volcano
Ref:https://brainly.com/question/1565778
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Which method of popcorn popping transfers heat into the kernels without any direct
contact (nothing hot touched the kernels)? Explain.
Which method of popcorn popping requires the kernels to move through the heat source
in order to pop. Explain.
Describe another example of an object being heated through conduction.
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Answer:
you plug in and turn on the popper, and then the hot air begins to rise in the popper while cooler air falls. As hot air circulates past the popcorn kernels and so the kernels absorb the hear
PLEASE HELP I'LL MARK BRAINLIEST
Answers
Answer:
B
Explanation:
Please help!! This is due today!!
A shopping bag can provide a force of 65 N before breaking. A shopper puts 5 kg of groceries in the bag. If the shopper tries to lift the bag with an upward acceleration of 2 m/s/s, will the bag break?
Answers
Fg= mg
Fg= 5kg• 9,8kg/N
Fg= 49 N
Because of the costs involved in maintaining high temperatures and pressure, nuclear method for generating electrical energy. is not yet a practical Which best completes the statement?
Answers
Answer:
Fusion or energy because I had that question in my school so I wrote it in my notes book so it fusion or energy I don’t now hop this help you
Explanation:
a man shoveling snow clears his front step using 200 joules in 100 seconds, how much power did he use
2 watts
20,000 watts
100 watts
300 watts
Answers
Answer:
2 watts
Explanation:
200 J divided by 100 S = 2