To calculate the density of an object, which of the following values do you
need to know?
A. Volume
B. Buoyancy
C. Weight
D. Mass
Answers
Answer:
Volume I think
Explanation:
Answer:
A. volume and D. mass
Explanation:
Density is the amount of matter (mass) in a given space (volume).
The density of an object can be found using the following formula:
d=m/v
where m is the mass and v is the volume.
In order to find the density, you must know the mass and the volume of the object.
Therefore, the correct answers are A. volume and D. mass.
Related Questions
HELP PLEASE Trying to learn how to do this
I can't figure it out for my students anyone knows
(LOL)
sorry if it is blurry
Answers
Answer:
Im sorry I cant help you but i just have to say something...
Explanation:
All though I cant see all of your face I can tell your very pretty and I wish you best of luck for your students. Have a good day/night!
Scientists have discovered convection currents inside Earth. Explain how these convection currents move and what layer(s) they occur in.
Answers
Answer:
It occurs in the mantle. As the core heats up the bottom of the mantle, the particles move faster causing the mantle to lose density. That causes it to rise and the rising starts the Convection Currents.
The convection currents occur in the mantle layer of the earth The stiff tectonic plates of the Earth move in response to convection currents in the planet's fluid, molten core.
What are convection currents?Convection currents are fluid motions brought on by temperature or density variations within a substance. Because the particles within a solid are fixed in place, convection currents are only visible in gases and liquids. A straightforward illustration of convection currents is warm air rising toward a home's ceiling or attic.
Differential heating leads to convection currents. Warm, less dense, lighter material rises while cool, more dense, heavier material sinks. Convection currents are patterns of circulation that are produced by this movement in the Earth's mantle, oceans, and atmosphere.
It takes place in the mantle. The particles travel more quickly toward the bottom of the mantle as the core heats it, causing the mantle to lose density. It rises as a result of that, and the rising causes the Convection Currents to begin.
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help me please 35 points and mark brainliest
Answers
1. The kinetic energy of the truck is 1959940.8 J
2. The kinetic energy of the car is 463037.04 J
1. How do i determine the kinetic energy of the truck?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of truck (m) = 6000 KgVelocity of truck (v) = 92 Km/h = 92 / 3.6 = 25.56 m/sKinetic energy of truck (KE) =?KE = ½mv²
KE = ½ × 6000 × 25.56²
KE = 1959940.8 J
Thus, the kinetic energy is 1959940.8 J
2. How do i determine the kinetic energy of the car?The kinetic energy of the 6000 Kg truck can be obtained as follow:
Mass of car (m) = 1200 KgVelocity of truck (v) = 100 Km/h = 100 / 3.6 = 27.78 m/sKinetic energy of car (KE) =?KE = ½mv²
KE = ½ × 1200 × 27.78²
KE = 463037.04 J
Thus, the kinetic energy is 463037.04 J
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what are the 2 waves on the electromagnetic spectrum if we were to take them out?
Answers
Answer:
The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
Object A with more mass, and object B with less mass. If you want to make both objects accelerate at the same rate, which of the two objects will require a greater force? Why?
Answers
Answer:
Object a
Explanation:
Answer: object a
Explanation:
How do you increase the amplitude of a wave? In science.
Answers
Answer:
increase the volume/intensity (im assuming you are talking about sound, if not let me know)
Explanation:
rate&thanks pls, and mark brainliest if im correct :)
Answer:
i got u
Explanation:
You increase the intensity or volume
If you want to increase the amplitude of a wave, you just have to make larger motions. Since the amplitude of a wave is the size of the wave (the distance from the top of the wave to bottom *vertical*). If you make a smaller motion the distance between the the top and the bottom is smaller, and if you make a bigger motion it is a longer distance from the top to bottom.
I hope this helps! :)
Please do ASAP IM POSTING 2 MORE
Answers
Air temperature :is a measure of how hot or cold the air is. It is the most commonly measured weather parameter
Answer:
1.Weather : the state of the atmosphere at a particular place and time as regards heat, cloudiness, dryness, sunshine, wind, rain, etc.
2. air temperature :Air temperature is a measure of how hot or cold the air is.
3.wind : the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.
4. humidity: a quantity representing the amount of water vapour in the atmosphere or in a gas.
the pressure in Arabian sea is much bigger than near the surface?
please don't scam
Answers
Answer:
In general, the annual sea surface temperatures(SSTs) in the Bay of Bengal(BOB) are higher than the Arabian sea(AS). because, there are two main reasons for higher SST in the Bay of Bengal than the Arabian Sea. they are 1. stratification, 2.strong mixing
stratification is nothing but a phenomenon which stratifies(layers) the sea water when different density water(fresh water, rain water) add into the sea water. So the stratification in the bay of Bengal is comparatively high than the Arabian sea due to the high river discharge and precipitation in the BOB than the AS. the mixing process over the Arabian sea is higher than the Bay of Bengal due to the prevailing of strong winds over the AS (because of the presence of the mountains of east Africa) than Bay of Bengal (because of the winds over the BOB are sluggish in nature then the AS). But generally winds over the sea mixes easily the normal sea water than stratified/stabilized sea water column. That's why less mixing will takes place over the surface of BOB than the AS. So due to the presence of less mixing over the surface of the Bay of Bengal than the Arabian sea, the SST values over the Arabian sea are always lower than the Bay of Bengal. that's why the Arabian sea is colder than the Bay of Bengal.
Explanation:
Answer:In general, the annual sea surface temperatures(SSTs) in the Bay of Bengal(BOB) are higher than the Arabian sea(AS). because, there are two main reasons for higher SST in the Bay of Bengal than the Arabian Sea. they are 1. stratification, 2.strong mixing
stratification is nothing but a phenomenon which stratifies(layers) the sea water when different density water(fresh water, rain water) add into the sea water. So the stratification in the bay of Bengal is comparatively high than the Arabian sea due to the high river discharge and precipitation in the BOB than the AS. the mixing process over the Arabian sea is higher than the Bay of Bengal due to the prevailing of strong winds over the AS (because of the presence of the mountains of east Africa) than Bay of Bengal (because of the winds over the BOB are sluggish in nature then the AS). But generally winds over the sea mixes easily the normal sea water than stratified/stabilized sea water column. That's why less mixing will takes place over the surface of BOB than the AS. So due to the presence of less mixing over the surface of the Bay of Bengal than the Arabian sea, the SST values over the Arabian sea are always lower than the Bay of Bengal. that's why the Arabian sea is colder than the Bay of Bengal.
Explan
Explanation:
How could you contract HIV through a cut on your finger
Answers
Essentially you can get it by someone else’s blood going into yours through the cut.
25 POINTS! Q1) A cinder block is pulled 0.50 meters to the right in 3 seconds. What is the block's average speed to the nearest hundredth of a meter per second (m/s)?
Q2) A skateboarder starts at the top of a halfpipe ramp, skates through the middle, and up the other side. Match the following to describe what is happening at each of the three points in the skater's movement.
Middle
End
Beginning
1.
Maximum kinetic energy
2.
Potential and kinetic energy is equal
3.
Maximum potential energy
Answers
The average speed of the blocks are 0.36 m/S.
Explanation:
Average speed is defined as the ratio of distance covered per unit time. So if it is said that blocks are pulled to 0.9 m in the right side. This means the blocks cover a distance of 0.9 m from the origin and that distance is covered in 2.5 s. Thus, the average speed can be calculated from the change in speed
with respect to time. As at time t = 0, the speed is
also zero, and at time t = 2.5 s, the speed will be
Speed =
0.9 = 0.36
2.5
Since, in this case, the speed is equal to the average speed of blocks. So the average speed of the blocks will be 0.36 m/s.
1.maximum kinetic energy minimum GPE
2.GPE is equal to kinetic energy
3 this time there will be maximum GPE
What is a nebula made from?
stars
dust and gas
planets
asteroids
Answers
Answer: Its made from dust and gas
Explanation:
I need help with question ii) Calculate the speed of these radio waves.
I don't know if I started it right.... I need help plss!!!
Answers
Answer:
Speed = Wavelength x Wave Frequency. In this equation, wavelength is measured in meters and frequency is measured in hertz (Hz), or number of waves per second. Therefore, wave speed is given in meters per second, which is the SI unit for speed.
help me pls i need the answer
Answers
Sedimentary rocks begin forming when existing rocks are worn away by wind and rain in a process called weathering. Weathering breaks rock into smaller pieces called sediment. Erosion is the removal and movement of sediment. Weathering and erosion happen slowly, over thousands and even millions of years. Eventually, layers of sediment are deposited on top of one another and pressed together. Sedimentary rock is formed when sediment sticks together after liquid is squeezed out. Sometimes, fossils get trapped between sediment layers.
The sediment of sedimentary rocks can range in size from a grain of sand to a shell or pebble. The name of the rock that’s created depends on the sediment that it’s made of. For example, shale is made of clay. Conglomerate is made of coarse sediment the size of small pebbles. The sediments of limestone are small shells.
Which of the following is an example of erosion?
A
Wind breaking down an existing rock into smaller pieces.
B
Layers of sediment pressed and sticking together.
C
Small shells being moved by water to the shore.
D
Animal fossils getting trapped between sediment layers.
Answers
Answer:
I think the answer is C
Explanation:
Liquid water is the major agent of erosion on Earth. Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment. Liquid water is the major agent of erosion on Earth. Rain, rivers, floods, lakes, and the ocean carry away bits of soil and sand and slowly wash away the sediment.
4.
A boat is travelling at a steady speed in a straight line across the surface of a
lake. Which statement about the boat is correct?
A The resultant force on the boat is in the direction of motion.
The resultant force on the boat is in the opposite direction to its motion.
C
The resultant force on the boat is vertically downwards.
D The resultant force on the boat is zero
Answers
Answer:
D The resultant force on the boat is zero
Explanation:
Convection currents form when warm air rises and cold air sinks. What causes the warm air to rise and the cold air to sink?
difference in weather
difference in climate
difference in density
none of the above
Answers
A scientist uses a camera to study the stars.
How would the scientist most likely use this technology?
1 to replace all of the old data about stars
2 to predict the star count over a broad area
3 to write observations about what the sky looks like
4 to count the number of visible stars in the sky
Answers
Answer:
It would most likely be 3!
Explanation:
A scientist taking photos of the stars would be using those photos as a sort of documentation. The only reason to record this is for data or research purposes, meaning that 1 and 2 are incorrect. While 4 is a possibility, it is a fruitless endeavor, as even if you managed to count all the stars in the night sky at one point, it would completely discount every star not visible from that part of the globe, making the data false/pointless. Again, this is just my educated assumption, but I do think the answer is 3. Good luck :D
A force of 250N is applied to the rope on a pulley system. The box you are
lifting with pulley requires a force of 1250N. What is the MA of the pulley
system? *
Answers
Explanation:
Hope it will help you a lot.
Suppose you move the free end of a rope up and down to create a wave. The rope is the medium How does the wave move in relation to the rope particles?
Answers
Answer:
the molecules in the rope move/vibration, vibrating the molecules around it and this vibrations we hear as sound , if you have any questions you can ask me.
The first and second laws apply to _________________ objects.
single or multiple
no
multiple
single
Answers
Answer:
multiple
Explanation:
Which of these statements best represents the law of conservation of energy?
A: Potential energy can be completely converted to kinetic energy.
B: The total energy in a system decreases over time.
C: Energy is being created in the universe every day
D: The energy created by machines can be lost.
Answers
According to the law of conservation of energy, which changes would
decrease the total energy of a system?
A. An addition of 500 J of thermal energy and a loss of 250 J of
thermal energy
O B. An addition of 300 J of kinetic energy and a loss of 250 J of
thermal energy
O C. An addition of 400 J of GPE and a loss of 350 J of thermal energy
O D. An addition of 200 J of thermal energy and a loss of 350 J of
kinetic energy
Answers
Answer:
Option D
Explanation:
I hope this helps
Changes that would decrease the total energy of a system an addition of 200 J of thermal energy and a loss of 350 J of kinetic energy.
What is thermal energy?The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is performed in the process.
According to the law of conservation of energy, which changes would
decrease the total energy of a system is an addition of 200 J of thermal energy and a loss of 350 J of kinetic energy.
An addition of 200 J of thermal energy and a loss of 350 J of kinetic energy.
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Cake, battery, boiling water, a flying kite, a flower vase on top of a table
Which of the items above have
a) Thermal energy
b) Kinetic energy
c) Gravitational potential energy
d) Chemical energy
Answers
But correct me if I’m wrong
Answer:
c i belive or maybe d i would think its one of those
Explanation:
State if these states are true or false
1.Light causes the same change to all materials.
2.All light is the same, whether it comes from the sun, a light bulb, or anywhere else.
3.Light can travel through materials that you cannot see through, like wood or aluminum foil.
Answers
2. false?
3. false
Light cannot cause the same change to all materials, All light is the not same, whether it comes from the sun, a light bulb, or anywhere else, Light cannot travel through materials that you cannot see through, like wood or aluminum foil, so all the statements are false.
What is light?Electromagnetic radiation that can be seen by the human eye is called "light." a very large range of wavelengths is covered by electromagnetic radiation,
(1) Light shows different phenomena when passed through different materials when it passes through the water is reflected in less no while the reflection is more in the glass.
(2) There are different type basis on their intensity and wavelength like the sun ray are having different light like X-rays gamma rays and have high wavelengths whereas the light from a bulb is having a low wavelength.
(3) No light can not travel through Opaque material like wood or aluminum foil.
Therefore, Light cannot cause the same change to all materials, All light is the not same, whether it comes from the sun, a light bulb, or anywhere else, Light cannot travel through materials that you cannot see through, like wood or aluminum foil.
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How has the car affected the way people live? Give three ways
Answers
2. The automobiles (cars) gave people access to jobs, places to live, and services.
3. Being able to travel from one to place to another in just a matter of minutes.
2. companies, like Amazon can deliver packages by car.
3. You can easily listen to music or de stress while in the car.
that 3rd is bad but the other two are good. :)
Help me pls, I'm begging.
Answers
I found this so I'm not sure if its correct, but I hope it helps
2.conclusion
3.observations
4.made
5.what make up the object
Which photoreceptive cells are used to see colors?
WILL GIVE BRAINLIEST! PLEASE HELP!
Answers
Answer:
Cones
Explanation:
Mark as BRAINLIEST please
Answer:
Cones are less sensitive to light than the rod cells in the retina (which support vision at low light levels), but allow the perception of color.
Explanation:
hope this helps
Which of the following has the highest frequency?
A. Microwave
B. Gamma Ray
C. Radio Wave
D. Ultraviolet Light
Answers
Have a good day/night
Hope this helps
PLEASE HELP IM TIMED!! THIS IS SCIENCE!! WILL MARK BRAINLIEST 13 POINTS
Which statement best explains how galaxies are held together?
A. Thermal energy generated by stars holds galaxies together
B. Magnetic forces among the components of galaxies holds galaxies together
C. Electrical energy generated by planets holds galaxies together
D. Gravitational forces among stars and other components of galaxies holds galaxies together
Answers
Answer:
D
Explanation:
Gravity pulls objects together
Explanation: Gravity holds things in place. Therefore the answer is gravity. Also, without gravity there would be nothing to hold planets in place which would make it to where there are no galaxies.
Hope this helps!:)
Justin and Oscar each hit a baseball with a bat. The baseballs have the same mass, but the ball Justin hits has a greater acceleration. What might be the reason for the greater acceleration of Justin's baseball?
Answers
The acceleration is different in both cases because, the force applied is different. Acceleration is force divided by mass of the object. Thus, Justin had greater force than Oscar.
What is force ?Force is an external agent acting on body to change its motion or deform it. There are various kinds of forces such as frictional force, gravitational force, nuclear force etc.
According to Newton's second law of motion, the force acting on an object is the product of its mass and acceleration.
Thus, F = ma
Hence, as the force increases the body is accelerated more.
With the same mass for the two balls, the force used to hit it was different and thus, the acceleration differs in both cases. Therefore, Justin has the greater force.
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