Answer:
Frequency.
Explanation:
More energy = shorter wavelength = greater frequency
caves are formed from?
Answer:
caves are mainly formed by water or in some other cases limestone.
Someone fires a 0.04 kg bullet at a block of wood that has a mass of 0.5 kg. (The block of wood is sitting on a frictionless surface, so it moves freely when the bullet hits it). The wood block is initially at rest. The bullet is traveling 300 m/s when it hits the wood block and sticks inside it. Now the bullet and the wood block move together as one object. How fast are they traveling?
Answer:
22.22m/s
Explanation:
The momentum before a collision = momentum after collision so...
work out the momentum of the first object (the bullet)
its p = mv
0.04 kg × 300 m/s = 0.54 kg × v
rearrange this to find v which is 0.04 x 300 = 12
so 12 = 0.54 x v
12/0.5 = v
v = 22.22m/s
hope this helps!
A book that weighs 0.35 kilograms is kept on a shelf that’s 2.0 meters above the ground. A picture frame that weighs 0.5 kilograms will have the same gravitational potential energy as the book when it’s raised to a height of ____
meters.
(Use PE = m × g × h, where g = 9.8 N/kg. )
Answer:
E p = m · g · h
E p ( book ) = 0.35 kg · 9.8 m/s² · 2 m = 6.86 J
E p ( picture frame ) = 6.86 J
( same gravitational potential energy as the book )
6.86 = 0.5 · 9.8 · h
6.86 = 4.9 h
h = 6.86 : 4.9
h = 1.4 m
Answer: 1.4 M
4 WILL GIVE YOU BRAINLIST
Which sentence supports this claim:A handmade gift is more meaningful than a store-bought gift?
Handmade gifts are usually less expensive than store-bought gifts.
Handmade gifts remind the receiver of the gift not to be so greedy at gift-giving times of the year.
Handmade gifts tend to look less perfect than store-bought gifts.
Handmade gifts require more of the giver’s time and effort than store-bought gifts.
A uniform meter rule is balanced by 80N and 20N from its ends. Find the position of its pivot from the 20N end. Show your working please
Answer:
80 cm
Explanation:
From the diagram attached,
Sum of clockwise moment = sum of anticlockwise
ΣACW = ΣCW
20x = 80(100-x)
Solve for x
20x = 8000-80x
20x+8x = 8000
100x = 8000
x = 8000/100
x = 80 cm.
The position of its pivot from the 20 N end is 80 cm.
can somebody definee newton1 word to word pls
Answer:
One newton is a unit of force equal to the force needed to move a one kilogram mass by one meter per second per second. Word originsThis word is named for Sir Isaac Newton (1642-1727), the great English mathematician and physicist who discovered gravity.
Explanation:
hope this help you
mark as brainlist
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (70pts)
Answer:
Rolling = Riding a bicycle on a sidewalk
Static = Pushing a car unsuccessfully
Sliding = Pulling your computer across the bed
Fluid = Throwing a soccer ball to your friend
Answer: Rolling = Riding a bicycle on a sidewalk
Static = Pushing a car unsuccessfully
Sliding = Pulling your computer across the bed
Fluid = Throwing a soccer ball to your friend
Explanation:
An airplane is flying north with an airspeed of 200 km/h when it encounters a crosswind of 70 km/h toward the east. which expression gives the resultant speed of airplane?
Answer:
211.89 km/h
Explanation:
Given that,
The speed of an airplance in North direction = 200 km/h
Speed in East direction = 70 km/h
We need to find the resultant speed of the airplane. It can be calculated as the resultant of the two velocities as follows :
[tex]v=\sqrt{200^2+70^2} \\\\=211.89\ km/h[/tex]
So, the required speed is 211.89 km/h.
i need help
What is the reason for heat transfer from one substance to another?
A.
difference in pressure
В.
difference in volume
C.
difference in temperature
D.
difference in mass
Answer:
C
Explanation:
What is happening in this image ?
Answer:
A mirror is scattering light.
He does a battery generate electrical energy?
Last question guys help
Answer:
I think the first reply me if I'm wrong sorry hehe
One of the smallest planes ever flown was the Bumble Bee II, which had a mass of 180 kg. If the pilot’s mass was 70 kg, what was the velocity of both plane and pilot if their momentum was 20,800 kg∙m/s to the west?
Answer:
no one help you this is bad app
a student is supplied with the following pieces of equipment:
• a small metal ball
• table tennis ball
• metre rule
• stop clock
• calculator
• light gate
• data logger
describe how the student can use this, or other additional equipment, to determine an accurate value for the acceleration of free fall (g). the student need not use all the equipment. show clearly what measurements should be taken and how the students should use these in determining (g). describe one source of error and how this might affect the value of (g).
(6 marks/year9/gcse)
Explanation:
Use a meter stick, small metal ball, stopwatch, calculator.
Have the students mark off a vetrtical distance from which to drop the metal ball. Ready the stopwatch, and start when the object is dropped and stop when the object contact the ground. Repeat 5 times and average the stopwatch times.
Now, use the formula d=vo+(1/2)at^2
There's no initial velocity, so d=(1/2)at^2
We know time and distance, so we can solve for a, acceleration.
2d=at^2
(2d)/(t^2)=a
Now, input the numbers gathered in the experiment in meters and seconds.
One source of error is human error (stopwatch timing)
Air resistance (although pretty negligible)
PLEASE ANSWER, will mark brainliest!!
Answer:
Purple Car and Black Car
Explanation:
Have to be moving in acceleration to have acceleration, being at a constant speed isn't moving.
5 WILL PAY YOU CASH APP IF YOU ANSWER
Which sentence supports this claim: Training their dogs to provide pet therapy is a fast-growing trend among dog-owners today.
The main job of a pet therapy dog is to allow people it doesn’t know to pet it and play with it.
In 2010, about 24,000 therapy dogs were registered with Therapy Dogs International.
The first known therapy dog was a Yorkshire Terrier named Smokey who comforted wounded soldiers.
Dogs make good therapy pets because they usually crave lots of attention and affection.
Answer:
Dogs make good therapy pets because they usually crave lots of attention and affection.
Answer: In 2010, about 24,000 therapy dogs were registered with Therapy Dogs International
Explanation:
Please help me please and you will get the brainlist
Answer:
4. Force = 178.6 Newton.
5. Acceleration = 2.28 m/s².
6. Force = 178.6 Newton.
Explanation:
4. Given the following data;
Acceleration = 3.8 m/s²
Mass = 47kg
Force = mass * acceleration
Force = 47 * 3.8
Force = 178.6 Newton.
5. Given the following data;
Force = 785N
Mass = 345kg
Acceleration = force/mass
Acceleration = 785/345
Acceleration = 2.28 m/s²
6. Given the following data;
Acceleration = 6m/s²
Force = 32N
Mass =force/acceleration
Mass = 32/6
Mass = 5.33 kilograms
Who is Isaac Newton?
Take the points, Im leaving Brainly..
Answer: English
. mathematician
. physicist
. astronomer
. theologian
. author
Explanation:
Take the points, Im leaving Brainly.. Why?!
[tex]\huge\bf\maltese{\underline{\red{Thanks}}}\maltese[/tex]
Plssssss help me no one wants to help me——— power plants use generators to generate electricity for homes and businesses. Some generators work by spinning a coil of wire inside a magnet, as shown in the image. To keep the coil of wire spinning, it’s often attached to a turbine, which is s as n axle with fan blades. Different kinds of power plants use different methods to spin the turbine to make electricity. What’s one way a power plant might spin the turbine?
Answer:
There are a many ways to produce electricity. Electrons can flow between certain different materials providing a current, as in a common battery. While reliable and portable, chemical batteries run down quickly. To provide the large amounts of steady power demanded by modern societies, large power plants have been built. Most power plants make electricity with a machine called a generator.
A 1925 Turbine Rotor
A 1925 turbine rotor for a Westinghouse generator, Image #21.035, Science Service Historical Image Collection, National Museum of American History
Generators have two important parts: the rotor (which rotates) and the stator (which remains stationary). Generators use the principle of electro-magnetic induction, which exploits the relation between magnetism and electricity. In large AC generators, an outer shell with powerful magnets rotates around a stationary "armature" which is wound with heavy wire. As they move, the magnets induce an electric current in the wire.
It is important to recognize that electricity is not mined or harvested, it must be manufactured. And since it's not easily stored in quantity, it must be manufactured at time of demand. Electricity is a form of energy, but not an energy source. Different generating plants harness different energy sources to make electric power. The two most common types are "Thermal Plants" and "Kinetic Plants".
1. Infer how the height of the lines on a seismograph change with an increase in
earthquake magnitude.
Answer:
his movement is proportional to the intensity of the earthquake,
Explanation:
An earthquake is a record of the intensity of an earthquake as a function of time.
Where the intensity is plotted on the y-axis, which corresponds to the vertical movement of the detector, this movement is proportional to the intensity of the earthquake, therefore the intensity increases the amplitude of the oscillation increases.
And the in x corresponds to time
The lines on a seismograph indicate the magnitude of an earthquake. The lines from the seismograph are indicative of seismic waves that the seismograph has recorded.
When there is a straight line on the seismograph, it means there are no earthquakes. However, if the lines become wiggly, it means that the ground is shaking.
How Earthquake Magnitude is measuredThe magnitude of the earthquake is determined from the logarithm of the amplitude of waves recorded by the seismographs.
In order to understand the amplitude of waves, you'd have to be versed with the anatomy of waves. Once the logarithm is computed (after adjustments for the distance between the seismographs and the epicenter of the earthquakes), it is checked against the Richter Magnitude Scale in order to place the earthquake in a category.
For example, an earthquake may be considered moderate if the adjusted amplitude of the waves recorded on the seismograph records 5.3 on the Richter Scale. On the other hand, a rating of 6.3 is considered a strong earthquake.
See the link below for the Anatomy of Waves:
https://brainly.com/question/15663649
See the link below for more about Readings from the Richter Scale:
https://brainly.com/question/922783
A burning candle is placed 20 cm in front of a concave mirror of focal length 10cm. find the nature and position of the image formed
Answer:
:)
Explanation:
u = 20 cm
f = 10 cm
Object is at centre of curvature
So , image will be formed at centre of curvature and the nature will be real and inverted
Image will be of same size as of object
A test charge of 0.16 C experiences a force of 0.04 N. What is the electric field strength?
Answer:charge and a 0.04 C charge are separated by a distance of 3.0 m. At what position between the two charges would a test charge experience an electric field intensity of zero? Answers 1. The magnitude of the electric field
Explanation:
A toddler pushed a 4-kg toy car at a constant speed against a ground frictional force of 8 N.
Then, the toddler pushed the toy car with the same force on a marble ground with no frictional
force against the toy car, what is the acceleration (in m/s2) of the toy car?
A. 0
B. 1
C. 2
D. 4
A 0.5 kg mango falls 22 m from a tree, what is the potential energy of the mango?
Look at the diagram B. What is happening in diagram B ?
Answer:
a lens is scattering light
Explanation:
Diagram B shows a plano concave lens. Plano-Concave lenses bend parallel input rays to diverge from one another on the output side of the lens and hence have a negative focal length.
In the given figure, a Plano concave lens is shown. It scatters light. The image is formed in front of lens. The formed image is virtual.
Hence, the correct option is (c) "a lens is scattering light".
Which of these waves probably has the largest wavelength?
Answer:
I think it's the last one
Explanation:
good luck
Answer: The last one...8 waves per second
Explanation:
Please help I’ll give 15 points
Answer:
note duration are measured in beats
what are the effects of ultraviolet sun rays????
Answer: UV rays, either from the sun or from artificial sources like tanning beds, can cause sunburn. Exposure to UV rays can cause premature aging of the skin and signs of sun damage such as wrinkles, leathery skin, liver spots, actinic keratosis, and solar elastosis. UV rays can also cause eye problems.
Explanation: Uv means ultraviolet
I WILL MARK BRAINLIEST IF CORRECT!!!
Answer:
I'm fairly sure that the answer is "100 m/s"
Explanation:
Fnet=ma
a=Fnet/m
a=4 N / 0.040 kg
a=100 m/s
please check my work before you submit, i don't wanna let cha down :)
3) Magnets are used to separate steel cans from aluminum cans in recycling plants. How can
they be used for this?
(Will give brainliest if it's a proper answer)
Answer:
Since steel contains iron (a magnetic metal), the magnets will attract the steel cans since aluminum is not magnetic. This is used to separate the steel cans from the aluminum cans so they can be recycled separately.