Given : A car starts from rest and retains the acceleration of 4m/s² in 20 second. Calculate its final velocity.
Solution : As we know that a car starts from rest so it's initial velocity should be 0 m/s. Acceleration is 4 m/s² and time taken is 20 sec. So, we need to calculate it's final velocity which we can get it usi g the first equation of motion.
First Equation of Motion : v = u + at
Putting all the required values in the formula we will get v
v = 0 + 4(20) v = 0 + 80 v = 80Henceforth, final velocity is 80 m/sec.
6.) What force would evetually cause the ball to come to a stop after leaving the ramp
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Forces of inertia
2 H2O2-> 2H20+02
2. What are the reactants in this reaction?
3. What are the products in this reaction?
4. What happened in this particular reaction? What happens in general decomposition reaction?
Explanation:
reactants --- hydrogen peroxide ( H2O2).products ----- water ( H2O) and oxygen (O2).decomposition of hydrogen peroxide to water and oxygen.Reaction of decomposition of hydrogen peroxide is very slow in moderate temperatures without the presence of a catalyst [11]. It can be sped up by increasing the temperature, which triggers the reaction of thermal decomposition. This reaction can be carried out in a liquid or vapour phase. This reaction is exothermic.hope this helps you.
How does the motor neuron help when dribbling a basketball?
Answer: Motor neurons of the spinal cord are part of the central nervous system (CNS) and connect to muscles, glands and organs throughout the body. These neurons transmit impulses from the spinal cord to skeletal and smooth muscles (such as those in your stomach), and so directly control all of our muscle movements. so they are resposnible for giving the message to your muscles to move your hand to dribble the ball.
Explanation:
2. A mixing bowl has a mass of 0.5kg. A baker adds 0.0002m of water to the mixing bowl until
the total mass of the bowl and water is 0.7kg.
a) Calculate the mass of the water.
mass = wounce
densinate
mass =
Answer:
mass of water is 0.2kg
Explanation:
mass of water is tota mass of bowl minus mass of bowl
d) Why is it so difficult to get accurate data for these objects?
Answer: For what objects? And what data?
Explanation:
HELP HELP HELP! Brainiest to the correct answer.
A battery moves 150c of charge through a potential difference of 12v in 1 minute. Calculate the power developed in the battery.
Answer:
V = W = 12 J/C * 150 C = 1800 J work in moving 150 C of charge
P = W / t = 1800 J / 60 s = 30 watts
Answer:
30 Watts
Explanation:
We're provided with the following information:
Amount of Charge flown (Q) = 150 CPotential Difference (V) = 12 VTime (T) = 1 min= 60 seconds
Current:
Current is the rate of flow of charge ,i. e., The amount of charge flowing "per second":
[tex]\boxed{\mathfrak{Current(I)=\frac{Charge(Q)}{Time(T)} }}[/tex]
We have:
Charge flown (Q) = 150 CTime (T) = 60 secondsFinding the current flown using the above mentioned formula:
[tex]\implies \mathsf{I=\frac{150}{60} }[/tex]
[tex]\implies \mathsf{I=\frac{5}{2} }[/tex]
=> I = 2.5 A
A(Amperes) is the SI unit of Current
Relation between Power, Voltage and Current:
We've a relation between Power, Current and Voltage, derived with the help of "Joule's Law of Heating", and that is:
[tex]\boxed{\mathfrak{Power(P)=Voltage(V) \times Current(I)}}[/tex]
We can finally find Power, Since we have:
Current (I) = 2.5 AVoltage (V) = 12 V=> P = 12 × 2.5
=> P = 30 W
W, Watts, is the Si unit of Power
help pls help pls help pls help pls help pls help pls
Answer: Its way to small can you make it bigger so i can answer.
Explanation:
As temperature increases, ____ energy increases.
Answer:
Kinetic Energy
Explanation:
Answer:
kinetic
Explanation:
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The number of protons in an atom is known as its
Answer:
Atomic number...
Explanation:
The number of protons is the same as the number of electrons. The Atomic mass is the number of both the neutrons and number of protons.
Please mark BRAINLIEST.
what would be the football weight on earth
Answer:
410–460 g (14–16 oz) and is inflated to 65.7–68.8 kPa (9.5–10.0 psi).
Explanation:
1. If a reaction starts with 5 atoms of Hydrogen, how many will there be
after they react with 10 atoms of Oxygen?
atoms of Hydrogen
2. The substances you have before a chemical reaction are called the
3. The substances you have after the chemical reaction are called the
4. What is the Law of Conservation of Mass?
Please help!
Answer:
you will have 20 hydrogin atomes
Explanation:
An unbalanced force of 20N acts on a 4.0kg mass what is it's acceleration
Hi there!
According to Newton's second law:
∑F = m · a, where:
∑F = net force (N = kgm/s²)
m = mass (kg)
a = acceleration (m/s²)
Rearrange to solve for acceleration:
F/m = a
20N / 4.0kg = 5 m/s²
What is the age of a meteorite if potassium-40 decayed from 80 g to 10 g? The half-life of potassium-40 is 1.3 billion years.
Answer:
10 / 80 amount of potassium-40 remaining
1/8 = 1/2 * 1/2 * 1/2 = 3 half-lives
3 half-lives * 1.3E9 yrs / half-life = 3.9E9 yrrs
After 3.9 billion years the 80 g will have decayed to 10 g
Answer:
3.9 billion years
Explanation:
i took test
Which one of these statements about Usain Bolt running 100 meters in 10 seconds is true?
A. Every second he ran exactly 10 meters
B. He goes fastest at the end of the race
C. He can't go 10 meters in the first second, so he will have to go faster than 10m/s later
D. He won the gold medal for his home country, the USA!
C or B; these make the most sense
Why are there more fat, shaggy bison in Time 3 than in Time 1?
A. The snowy winter made the smaller, smooth bison grow longer
fur. The next year, all the bison grew longer fur and got fat.
B. The small, smooth bison moved to a warmer place for winter.
The next year, most of the bison were the fat and shaggy ones
that didn't move away.
C. After the snowy winter, the smaller, smooth bison started to have
shaggy offspring. The shaggy offspring do better in cold weather.
D. During the snowy winter, the fat, shaggy bison survived while
most of the other bison died. The next year, the shaggy bison
produced mostly shaggy offspring.
Answer:
I believe the answer is D.
Explanation:
It would have been helpful if there had been more information included with this problem, but it would make sense that the answer is D. If there is a winter between time 1 and 3, bison that are not well-suited to the weather, (skinny and smooth) will die off, and only the ones well-suited to winter weather will survive to produce offspring.
During the snowy winter, the fat, shaggy bison survived while most of the other bison died. The next year, the shaggy bison produced mostly shaggy offspring. So, option D.
What is meant by adaptation ?An organism, such as a plant or animal, can acquire any heritable characteristic that aids in its ability to survive and procreate in its environment. This is known as adaptation.
Here,
A bison has a summer coat that is lighter in weight and lighter in colour than its shaggy, long, dark-brown winter coat.
In comparison to female bison, men are noticeably bigger and heavier. Wood bison typically fluctuate in size from larger to smaller, compared to plains bison.
When the grassland is hot and there is no shade, the bison's short, thinner hair at the back helps keep it cool. In times of heavy snow and wind, bison move through the landscape while facing the elements. This is made feasible by the thick coat. On chilly days, the coat's dark brown to nearly black colour aids to absorb solar heat. Similar to dogs, bison get a heavier winter coat in the autumn and maintain it into April. By the end of spring, they have shed and grown a new, lighter coat.
Hence,
During the snowy winter, the fat, shaggy bison survived while most of the other bison died. The next year, the shaggy bison produced mostly shaggy offspring. So, option D.
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A cat jumps from a balcony. About how fast is the cat moving after 1.5 s?
heyyyyyyyyyyyyyyyypt2
what are five examples of things melting?
ice cube to water, butter in pan, plastic when burned, candles, popsicles
(i) A stone is thrown vertically upwards with an initial velocity of 60ms. Find
a) the maximum height attained by the stone
b) the time taken to reach the maximum height (Take g = 10 ms?)
c) the net displacement if the stone returns back to point from where it was thrown up.
Answer:
i) 180m ii) 6sec ii)180m
Explanation:
i) Hmax = U²/2g
= 60²/20
= 3600/20= 180m
ii). Tmax= U/g
= 60/10= 6sec
iii). X= ut²+ 1/2gt²
since U is 0,then ut=0
X=0+ 1/2×10×6²
X=5×36= 180m
hope its clear??
What is the change in internal energy if 60J of heat are released from a system and 20J of work is done on the system? Use U=Q-W
A. 80J
B. -80J
C. -40J
D. 40J
Which statement about the universality of gravity is untrue?
Answer: The gravitational force between two objects depends only on their masses.
Explanation:
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Therefore, gravity relies on mass and distance, not just mass.
Krebs Cycle experiment: if you want to increase the rate of the succinate forming fumarate, what could you do to the experiment?
To increase the rate of the succinate forming fumarate you can increase the ATP and the enzyme that catalyzes this reaction
The Krebs cycle, also known as the citric acid cycle comprises a set of chemical reactions that are essential for organisms to obtain energy.
One of the steps in the cycle involves the use of succinate with a chemical formula of C4H6O4 to form fumarate or C4H4O4. This means in this reaction it is necessary to remove 2 hydrogen atoms.
This process requires two main factors:
ATP or energy the cell uses to carry out the reactionSuccinate dehydrogenase or the enzyme that removes the hydrogen atomsBased on this, the reaction can be faster if there is more succinate dehydrogenase or if the energy increases.
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PLEASE HELP!!!!
What is the measure of The gravitational force on an object?
weight and mass.
Explanation:
Weight and Mass Mass is a measure of the amount of matter in an object; weight is a measure of the gravitational force exerted on an object. The force of gravity on a person or object at the surface of a planet is known as weight.
Answer:
It's the objects weight
Explanation:
A lighter object will fall slower than a heavier object
How many plants must be on the new settlement to provide enough oxygen for 20 adult humans to survive
Answer:
nasaan po yung problem?
Explanation:
picture kailangan kooo
3
In a race, a car travels 60 times around a 3.6 km track. This takes 2.4 hours.
What is the average speed of the car?
on km/h
Answer:
V = S / t = 60 * 3.6 km / 2.4 hr = 90 km / hr
Let G be the universal gravitational constant and mp be the mass of the planet a satellite is orbiting. Which equation could be used to find the velocity of the satellite if it is placed in a low Earth orbit?
Let G be the universal gravitational constant and mp be the mass of the planet a satellite is orbiting. Which equation could be used to find the velocity of the satellite if it is placed in a low Earth orbit?
The equation that could be used to find the velocity of the satellite if it is placed in a low Earth orbit is [tex]v = \sqrt{\frac{Gm_p}{200 \ km} }[/tex].
The given parameters;
mass of the planet, = [tex]m_p[/tex]A low Earth orbit is an orbit around the Earth with altitude in the range of 250 km and 2000 km.
The gravitational potential or the work done in bringing the satellite to the low Earth orbit is given as;
[tex]U = \frac{GMm_p}{R} \\\\[/tex]
where;
M is the mass of the EarthR is the altitude of the low Earth orbitlet the value of R = 400 km
Note: any value between 250 km and 2000 km can be used BUT 400 km is the only value within this range that can be found in the given options as you will see at the end of the solution.
[tex]U = \frac{GMm_p}{400 \ km}[/tex]
The kinetic energy of the satellite at the low Earth orbit is equal to the gravitational potential energy due to the altitude of the low Earth orbit.
[tex]K.E = U\\\\\frac{1}{2} Mv^2 = \frac{GMm_p}{400 \ km} \\\\v^2 = \frac{2Gm_p}{400 \ km}\\\\v^2 = \frac{Gm_p}{200 \ km}\\\\v = \sqrt{\frac{Gm_p}{200 \ km}}[/tex]
Thus, the equation that could be used to find the velocity of the satellite if it is placed in a low Earth orbit is [tex]v = \sqrt{\frac{Gm_p}{200 \ km} }[/tex].
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WILL GET BRAINLEST Which statement is the best example of how society affects the use of technology? A. Larger vehicles that use gasoline release more carbon dioxide than smaller gasoline-powered cars. B. Researchers are developing solar-powered cars that can travel long distances. C. People who make a lot of money tend to buy new cars with the most modern features. D. People who sell cars make more money when the supply of new cars is low.
Answer:
Hey there
It says "use of technology" so let's get rid of option B because that talks of development. Now let's get rid of A because we are ask "how society affects the use of technology", not technology affects things".
We are left with C and D. C sounds the most plausible because it is about how "sociaty affects the use of money". D is not right because it talks about how people sell cars.
suppose a 51 kg bungee jumper steps off the royal gorge bridge, in colorado. The bridge is situated 321 m above the arkansas river. the bungee cords spring constant is 32 N/m, the cords relaxed length is 104m and its length is 179m when the jumpers stops falling. what is the total potential energy associated with the jumper at the end of his fall? assume that the bungee cord has negligible mass
The total potential energy associated with the jumper at the end of his fall is 90,000 J.
The given parameters;
mass of the jumper, m = 51 kgheight of the bridge. h = 321 mspring constant of the cord, k = 32 N/mextension of the cord, x = 179 m - 104 m = 75 mThe total potential energy associated with the jumper at the end of his fall is calculated as follows;
U = ¹/₂kx² + mgΔh
where;
Δh is the change in height after falling
U = ¹/₂(32)(75)² + (51)(9.8)(0)
U = 90,000 J
Thus, the total potential energy associated with the jumper at the end of his fall is 90,000 J.
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Francine ran 3 laps around the track. If the track was 0.25 miles, how far did she run?
What was her displacement at the end of her third lap?
Answer:
Francine ran a quarter of a mile or 0.75 percent of a mile.
Explanation:
Help me to solve the question
Answer:
https://brainly.com/question/24997963 this will help you. You need to sq rt the added values then divide a+b by the square value. Keeping anything thats negative negative if negative is answer and set to = cos theta. then convert from cos theta = 1 cos will = 0. But if cos theta = decimal then ensure its positive number and that's your answer. Formula a+b/ sqrt a+b
Explanation: