Answer:
300,000
Explanation:
why it's dangerous to jump from a moving bus?
Answer:
A man jumping out from a moving bus holds the inertia of motion.As the man lands on the ground,feet came to rest instantly while the upper due to inertia of motion.Therefore the person may fall under bus.
b) When the wave passes over the glass it refracts. State what will happen to each
of the following properties of the wave when it refracts: (3)
Velocity -
Wavelength -
Frequency -
LOVE THE DOG
Explanation:
A 1 kg object is located at a distance of 1.0 x 103 m from the center of a larger
object whose mass is 2.0 x 1020 kg.
a. What is the size of the force acting on the smaller object?
The force = 1.334 x 10⁴ N
Further explanationGravity is a force that arises because of the attraction between objects with mass.
The magnitude of this attraction is proportional to the mass of the object.
The greater the mass of the object, the greater the gravitational force
Relationships can both be stated in
Newton's Gravity Law:
[tex]\rm F=G.\dfrac{m_1.m_2}{r^2}[/tex]
with F = gravitational force, N
G = gravitational constant, 6.67 x 10⁻¹¹ Nm²/kg²
m1, m2 = mass of object, kg
r = distance between two objects. m
m₁= 1 kg
m₂=2 x 10²⁰ kg
r = 1 x 10³ m
The force acting on the smaller object=The force acting on the larger object(Newton's Third Law)
[tex]\tt F=6.67\times 10^{-11}\dfrac{1\times 2.10^{20}}{(1\times 10^3)^2}\\\\F=1.334\times 10^4~N[/tex]
Kinetic and potential energy are forms of what kind of energy?
gravitational
chemical
electrical
mechanical
Answer:
Gravitational.
An object is thrown horizontally off of a cliff. While falling, what happens to the horizontal acceleration?
It first decreases and then increases
O It decreases
O It increases
O It stays at zero
O It stays at a constant, non-zero, value
There is no acceleration in the horizontal direction because the speed in that direction is constant. So it stays at zero.
MathPhys Pls PLS PLS PLS HELP ME!!!!
Which of these statements describes the relationship between mass and weight?
(1 Point)
Mass is always greater than weight.
Mass of an object changes based on location, weight stays constant.
Mass of an object is constant, weight changes based on location.
Mass and weight are the same measurement.
Answer:
Usually, the relationship between mass and weight on Earth is highly proportional; objects that are a hundred times more massive than a one-liter bottle of soda almost always weigh a hundred times more—approximately 1,000 newtons, which is the weight one would expect on Earth from an object with a mass slightly greater ...
I'll give you Brainliest if you answer fast!
A table with a mass of 23.5kg sits on the ground. What is the normal force on the table?
A. 230 N
B. 442 N
C. 176 N
D. 23.5 N
Answer:
Fg=230 N
Explanation:
Fg=m*g
Fg=23.5*9.8
Fg=230.3
Fg=230 N
What factor(s) determine the strength of gravity between any two objects that have very different masses?
(1 Point)
The mass of each object.
The mass of only the larger object.
The mass of each object and the distance between them.
The shape of each object and whether they are moving towards each other.
Answer:
the time it takes for the same size object to fall on each object
Explanation:
Answer:
the mass of each object and the mass of each object and the distance between them
Explanation:
just researched ;)
Why are so many people using this on thing like a freaking dating app???
Answer:
this is were you get everything
Explanation:
Answer:
that's crazy. people really do be thirsty for anything doe.
Explanation:
If plants do not get watered, they will start to wilt because their central vacuoles are empty. When they get water again, they will stand back up because their vacuoles have filled back up. What process allows their vacuoles to fill back up with water? *
Answer:
osmosis
Explanation:
The process that allows the vacuoles of plants to fill back up with water after a period of wilting is osmosis.
Osmosis is the movement of water molecules from a region of higher water potential to a region of lower water potential through a semi-permeable membrane. Water enters the vacuoles of plants osmotically once water becomes available in their cells.
The availability of water in the cytosol makes it to have a higher water potential than the cell sap. In this case, the vacuole membrane or the tonoplast acts as the semi-permeable membrane and allows water to diffuse into the vacuole.
How does the law of conservation of mass apply to chemical changes?
Answer:
The Law of Conservation of Mass states that matter cannot be created nor destroyed. It can only be transformed from one state or substance to another. This means that this law applies to both physical and chemical changes. In physical changes, the substance before and after the phase change still has the same mass.
What will the velocity of the mass be after 2 seconds?
The most important thing for determining and object's inertia is....
its c tjrxjxfjzjzrjrzjrzjkxkrzizikxikskiskskioxi
Answer:
it's C velocity
Explanation:
Please help hurry. It’s time.
Answer: a
Explanation: Hope it helps
Answer:
A
Explanation:
I think its a because A would be heavier making it go down faster than B. its like when you drop a father compared to a ball, the feather is lighter so it will go down slower than the ball because it has more mass
A 35 kg child has 190 J of kinetic energy after sledding down a hill. What is the child's speed in meters per second at the bottom of the hill?
Given: Mass= 35kg
Ekinetic= 190 J
Analysis: Ek= mv^2/2
solution: 190J=35v^2/2
V=square root(2×190)÷2= 3.2 m/s
The child's speed in meters per second at the bottom of the hill is 3.235 meter/sec.
What is Kinetic Energy?It is the type of energy an object has due to its motion. it is directly proportional to the product of mass and the square of the velocity of the object. It is given by the formula,
Kinetic Energy = 0.5 × Mass × (Velocity)²
Given that the mass of the child is 35 kg and the kinetic energy of the child after sledding down a hill is 190 J. Therefore, the speed of the child can be written as,
Kinetic Energy = 0.5 × Mass × (Velocity)²
190 J = 0.5 × 35 kg × (Velocity)²
(Velocity)² = 190 J / (0.5 × 35 kg)
(Velocity)² = 10.857142
Velocity = √10.857
Velocity = 3.235 m/sec
Hence, the speed is 3.235 m/sec.
Learn more about Kinetic energy here:
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What are the differences and similarities of physical and chemical changes?
Answer:
A physical can be changed back to its original state. A chemical can not.
Explanation:
Answer:
Physical and chemical changes are similar because matter experiences a change in state. Physical changes are different because matter remains the same substance, just in a different state, whereas chemical changes change the matter
Explanation:
copied from the internet
Please help A.S.A.P
If the bands in an igneous rock are dark. What kind of magma was present when it was formed?
Answer:
The magma, molten rock under the surface, and lava (molten rock on the surface) harden into igneous rock. The igneous rock then breaks apart over time through the process of weathering.
Explanation:
HELP! A class is performing an experiment to keep an ice cube solid for as long as possible. which students actions could be a source of error in this experiment?
A. Jody included a fan in her experiment, and Katie did not use a fan.
B. Maria wrapped the ice cube tightly in cotton and aluminum foil.
C. Jerrie used different sized ice cubes each time he repeated the experiment.
D. Carey measured the quickly melting cube every 5 minutes.
Answer:
B. Maria wrapped the ice cube tightly in cotton and aluminum foil.
Explanation:
According to this question, a class is performing an experiment to keep an ice cube solid for as long as possible. However, in the experimental procedure that will be used to actualize this aim, certain protocols must be duly observed to avoid error in the experiment.
Among the listed options containing actions taken by students, wrapping the ice cube tightly in cotton and aluminum foil is a likely source of error to the experiment. This is because aluminum, owing to its metallic properties, is a good conductor of heat. Hence, Aluminum foil will conduct heat and cause the ice cube to melt faster than normal.
This will jeopardize the aim of the experiment, which is to keep an ice cube solid for as long as possible.
A tennis racket strikes a tennis ball with a force of 100 N. With what force
does the ball strike the racket? *
Answer:
-100N
Explanation:
Newton's third law of motion states that to every force exerted on one body, there is an equal and opposite force. This means that if object A exerts an ACTION force on B, there is a force called REACTION FORCE, which is equal and opposite, exerted on A by B.
The action and reaction forces are equal in size/magnitude but opposite in direction. In this case where a tennis racket strikes a tennis ball with a force (action force) of 100N, the ball will strike the racket with a reaction force of -100N.
F(RB) = -F(BR)
What is energy?
the ability to do work
chemical change
force
force x distance
Which of the following describes an action-reaction pair?
O A. You push a car forward, and the car pulls you forward.
B. Earth's gravity pulls down on you, and your gravity pulls up on
Earth.
C. Friction slows you down, and the normal force holds you up.
D. Your hat pushes down on your head, and your feet push down on
the ground.
Answer:
B. Earth's gravity pulls down on you, and your gravity pulls up on
Earth
Explanation:
AYEPECKS
the ability to do work or cause change is called
Answer:
The ability to do work or cause change is called energy. Energy comes from many sources, and is found in two main forms. One form, potential energy, is energy that has the potential, in an object at rest, to do work later. An example of this would be a car parked at the top of a hill with its brakes on.
Explanation:
i'm built different
Energy is defined as the ability to do work or cause change . It is common
and present in all forms of living and non-living organisms.
The primary source of energy is regarded as the solar(light) energy which
helps in the production of chemical energy by plants in the form of
food(starch)
Subsequent inter-conversion of forms of energy occurs such as conversion
of chemical energy to electrical , kinetic energy etc.
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Which situation describes the highest rate of power?
A. A weight lifter does 500 joules of work in 1.5 seconds.
B. A weight lifter does 800 joules of work in 0.5 seconds.
C. A weight lifter doch 800 joules of work in 1.5 seconds.
D. A weight lifter does 500 joules of work in 0.5 seconds.
The situation B describes the highest rate of power. The value of power in the situation A IS 1600 Watt.
What is average power?Average power is a ratio of total work done by the body to the total time. Its unit is the watt. It is also defined as the rate of total work done by the body.
Power is defined as the rate of work done. Mathematically found as;
[tex]\rm P = \frac{W}{t} \\\\ P=\frac{800}{0.5} \\\\ p= 1600 \ Watt[/tex]
Hence, the situation B describes the highest rate of power. The value of power in the situation A is 1600 Watt.
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HELP HELP, this should be pretty easy
Where does all of earth’s atmosphere energy come from
Answer:The atmosphere directly absorbs about 23% of incoming sunlight, and the remaining energy is transferred from the Earth's surface by evaporation (25%), convection (5%), and thermal infrared radiation (a net of 5-6%).Jan
Explanation:
None
A water park is designing a new water slide that finishes with the rider flying horizontally off the bottom of the slide. The slide is designed to end 1.2 m above the water level, and the average rider is estimated to leave the bottom of the slide at 25 m/s. How far will the rider fly through the air before hitting the water?
Answer: 12.62 meters
Explanation:
why does nobody love me?
Answer: I’m sure theirs people out there that like you, and if there isn’t, you should just focus on yourself.
Explanation:
Answer:
Well, There are a couple reasons it could seem like nobody loves you...
Explanation:
One reason is that people really do love you, they just were never shown love and affection so they are unsure of how to show that to you. Another reason could be that it's god telling you that you are meant for much bigger and greater things. Maybe it's him reminding you that, yeah, people really suck, but that's life, and you're better than that. If you make the right decisions in life, you will be able to stand taller than they ever did. I hope this helps.. : )
HELP HW!!!!! IF U CAN SOLVE ONE AT LEAST I WILL CROWN U BRAINLIEST ( I’m so bad at this plz helppp)
Answer:
Q = I * t = 2 Coulomb / sec * 1000 sec = 2000 Coulombs transferred
E (energy) = V * Q = I * t * 240 V
E = 240 J / Coul * 2000 Coul = 480,000 Joules
Next question:
Total voltage drop in circuit = 6.5 V + 4.5 V = 11 V
So the power supply must supply 11 V
Distance Versus Displacement: Which one will always be the shortest out of the 2?
Answer:
The "distance" is the answer to the question,
Explanation:
Help plz I’m Cunfused !!
Explanation:
look up the coordinates or if they provide you with a map use that
Answer:
find each point in and draw a straight line until they touch and whatever is there is the country
What is the relative humidity if the dry-bulb temperature is 18°C and the wet-bulb temperature is 11°C?
Answer:
The amount of moisture air can hold is dependent on its temperature and pressure. The warmer the air the greater the quantity of water vapour it can contain. The air temperature is measured with a normal thermometer this is the Dry-Bulb reading. The actual amount of moisture known as the mixing ratio is measured in grams of water per kilogram of dry air. When air at a certain temperature is saturated it cannot hold any more moisture. The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount.
We can use evaporation to measure the amount of moisture in the air. A wet cloth is placed over the bulb of a thermometer and then air is blown over the cloth causing the water to evaporate. Since evaporation takes up heat, the thermometer will cool to a lower temperature than a thermometer with a dry bulb at the same time and place. The depression in Wet-Bulb temperature allows the humidity to be calculated. If the air is fully saturated (100% relative humidity) the water cannot evaporate, so both the wet and dry bulb temperatures are the same. If the dry and wet bulb temperatures are set to the same value the calculator will show the saturation mixing ratio the amount of water in saturated air at that temperature.
If partly saturated air is cooled without changing its pressure or amount of water vapour, a point is reached when it becomes saturated. The moisture will be given up as dew or ice crystals. This temperature is the Dew Point. This is why condensation will form on a bottle of cold beer, as the air in the vicinity of the bottle is cooled below its dew point. Meteorological reports usually quote the temperature and dew point as well as the station pressure. Moisture content and relative humidity can be calculated from these figures.
The Psychrometer is the name of a device containing both a wet and dry bulb thermometer. This can be a fixed device for meteorology or a handheld sling psychrometer that is often used in air conditioning applications.
Explanation:
