Answer:
1.75 [tex]m/s^{2}[/tex]
Explanation:
Acceleration = [tex]\frac{Final velocity-Initial velocity}{Time}[/tex]
= [tex]\frac{10 - 3}{4}[/tex]
= [tex]\frac{7}{4}[/tex]
= 1.75 [tex]m/s^{2}[/tex]
please help me with this!!!
Answer:
I think the answer is C :)
Explanation:
a body has a speed of 80 kilometre per hour how long it will take to travel 120 kilometre
Answer:
1.5 hour
Explanation:
Time = distance/speed
Time= 120/80 = 1.5 hour
What part of the atom contains the protons and neutrons?
The atom
The electron cloud
The nucleus
The bottom part
How much force is applied if a 130 kg mass is accelerated at 5 m/s^2
Answer:
650N
Explanation:
f = ma
130kg x 5 m/s^2 = 650N
What is the frequency of a wave when it speeds up at 5 m/s for a distance of 25 m?
Answer:
0.2Hz= frequencyExplanation:
given=
v = 5m/s
distance = 25m
time= distance/ speed = 25/5
T= 5
and frequency = 1/T
= 1/5 = 0.2 Hz
hope this will help you
If energy is conserved, then:
O A. initial (PE + KE) = final (PE + KE).
O B. the initial KE must be zero.
O C. the momentum does not change.
O D. PE(before) = KE(before).
If energy is conserved, then initial (PE + KE) = final (PE + KE). So, the correct option is A.
What is meant by Law of Conservation of Energy ?The law of conservation of energy states that, energy can neither be created nor be destroyed, but can be transformed from one form to another.
Here,
According to law of conservation of energy,
The total energy of an isolated system remains constant. That means, the total energy of the system in the initial state will be same as that in the final state.
The total mechanical energy is the sum of kinetic energy and potential energy.
TE = KE + PE
Therefore, the energy to be conserved in the system,
Initial TE = Final TE
So, Initial (KE + PE) = Final (KE + PE)
Hence,
If energy is conserved, then initial (PE + KE) = final (PE + KE).
To learn more about law of conservation of energy, click:
https://brainly.com/question/29775341
#SPJ2
How do we find work from a force-displacement graph when the force exerted
is not constant?
Answer:
Explanation:
Read forces directly from the graph.
Read displacements directly from the graph.
Use the area under the graph to find the work done by the force. This is equal to the kinetic or potential energy the object gains due to the application of the force.
PLEASE HELP PHYSICS
Wiley coyote pushes a 5kg boulder from an initial height of 10m, the boulder rolls down the hill, across the road, and up the hill on the left. The rock is able to reach a height of 17 m before rolling back down. How fast did Wiley have to push the rock to make this happen?
Answer:
v = 11.7 m / s
Explanation:
For this exercise we can use the conservation of energy
starting point. Where you drop the stone
Em₀ = K + U = ½ m v² + m g h₁
final point. Point where the stone arrives
Em_f = U = mgh₂
We are assuming that there is no friction, so the energy is conserved
Em₀ = Em_f
½ m v² + m g h₁ = m g h₂
v² = 2g (h₂-h₁)
let's calculate
v² = 2 9.8 (17 - 10)
v = √137.2
v = 11.7 m / s
1. How does a lunar eclipse happen?
2. How does a solar eclipse happen?
3. Which one occurs more often?
Answer:
1.lunar eclipse- happen when Earths shadow block the sun light
2.solar eclipse-A solar eclipse occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight
3. lunar and solar eclipses occur with about equal frequency. Lunar eclipses are more widely visible because Earth casts a much larger shadow on the Moon during a lunar eclipse than the Moon casts on Earth during a solar eclipse. As a result, you are more likely to see a lunar eclipse than a solar eclipse.
Explanation:
If two bodies have different forces but same acceleration and only one force is known how do I find the other one?
Answer:
Use F = m*a
Explanation:
If you are given the mass of the two different bodies, you could rearrange these equations, plug in the mass of the unknown body to find the unknown force
Should Native Americans be allowed to use peyote in their religious rituals? Why or why not? Provide support for
your position.
Answer:
Native Americans should be allowed to use peyote in their religious rituals. The United States should not restrict access to peyote and should not interfere with the use of peyote in Native American rituals. Many religious communities use a substance that can cause a change in consciousness during their ceremonies, including Christian communities who use wine as part of their sacrament. Native Americans use the peyote responsibly and should not be restricted from its use.
Explanation:
yup
2. Write five honest ways of earning money.?
Answer:
Get Hired
Start a business
rent out your house
Sell online
Take surveys
Explanation:
Answer:
1 can be working with a family member and helping them with their work and earning money from that.
2 getting a job that fits your age limit.
3 doing chores around your home.
4 babysitting your siblings or family member and charging a decent fair price.
5 helping with pets or helping around outside
Explanation:
What is the speed of a walking person in m/hr if the person travels 1000 m in 30 minutes?
horseshoe magnet should always be covered with plastic true or false
Answer:
True
Explanation:
I did this on a test and got it right, I swear
3. How did Kepler's work influence Newton?
Kepler understood that forces caused the motion of planets, but did not understand how to describe this
motion.
Newton understood that forces caused the motion of planets, but did not understand how to describe this
motion.
O Kepler acted as a mentor for Newton as a young astronomer
O Kepler described the motion of planets, but did not explain the cause of this motion
Answer:
How Kepler's work influenced Newton is;
Kepler described the motion of planets, but did not explain the cause of this motion
Explanation:
Kepler's first law states that the motion of the planets are elliptical
Kepler's second law states that the elliptical orbit of the planets round the Sun at the focus of the ellipse is such that an equal area at equal times is swept by the line between the planets and the Sun
Kepler's third law states that the distance of a planet from the Sun and the time it takes the planet to move round the Sun are related mathematically
From Kepler's law Sir Isaac Newton explained the causes of motion
6. A wave has a frequency of 600 Hz and is traveling at 300 m/s. What is its
wavelength?
Answer:
0.5m
Explanation:
v=f×lamda
v is 300m/s, f is 600Hz, lamda is ?
lamda=v/f
lamda=300/600
lamda =3/6=1/2m
PLEASE HELP ILL GIVE CROWN!!!
the main difference between weather and climate is-
A ) Weather occurs daily, while climate is the average of weather over a long period of time.
B ) Climate occurs daily, while weather is the average of climate over a long period of time.
C ) Weather is not affected by ocean and wind currents but climate is.
D ) Climate is not affected by ocean and wind currents and wind currents but weather is.
Answer:
A :)
Explanation:
....................
Answer:
Shoukd be A
Explanation:
Weather reflects the short term conditions while climate is average for the certain location
The kind of heat transfer that travels through space in electromagnetic waves is?
Answer:
radiation!
Explanation:
Answer: Radiation is the thermal transmission of heat energy across space.
Explanation:
A dishwasher has a power of 1 kW. It is used for 2 hours. How much energy will it transfer?
Answer:2kwh
Explanation:
If a ball of radius 0.1 m is suspended in water, density = 997 kg/m^3, what is the volume of water displaced and the buoyant force?
Answer:
Part A
The volume of water displaced is 4.1887902 × 10⁻³ m³
Part B
The buoyant force is approximately 40.93 N
Explanation:
From the question, we have;
The radius of the ball suspended (barely floating) in the water, r = 0.1 m
The density of the water, ρ = 997 kg/m³
Part A
The volume of the ball = The volume of a sphere = (4/3)·π·r³
∴ The volume of the ball = (4/3) × π × 0.1³ = 0.0041887902 m³ = 4.1887902 × 10⁻³ m³
Therefore;
The volume of water displaced, V = The volume of the ball = 4.1887902 × 10⁻³ m³
The volume of water displaced, V = 4.1887902 × 10⁻³ m³
Part B
The buoyant force = The weight of the water displaced = Mass of the water, m × The acceleration due to gravity, g
The buoyant force = m × g
Where;
g ≈ 9.8 m/s²
The mass of the water, m = ρ × V
∴ m = 997 kg/m³ × 4.1887902 × 10⁻³ m³ = 4.17622383 kg
The buoyant force = 4.17622383 kg × 9.8 m/s² ≈ 40.93 N.
which one is this one How does the author describe the conditions for women at the Blackfeet Reservation in Montana?
Answer: b
Explanation:
The length of the track itself is 500m. The vehicles (each of mass 15kg) are dragged
along the track back to the top of the ride in stacks of 4. The force required to drag
them at constant speed is 200N
Use an equation from page 2 to calculate the total work done in dragging the stack
back to the start of the ride
Answer:
W = 100000 J = 100 KJ
Explanation:
Here we will use the most basic and general formula of work, which is as follows:
[tex]W = Fd[/tex]
where,
W = Work Done = ?
F = Force Required = 200 N
d = Length of Track = 500 m
Therefore,
[tex]W = (200\ N)(500\ m)\\[/tex]
W = 100000 J = 100 KJ
Can someone please help me I don’t understand this
explain the coin in water appears to be raised..
Answer:
defraction
Explanation:
when light passes from a less dense medium(air) into a dense medium(water) the light rays bend towards the normal. This makes the coin look closer
Which of these characteristics will produce the most dense water?(Giving Brainlist For Correct Answer!)
-High salinity, high temperature
-High salinity, low temperature
-Low salinity, high temperature
-Low salinity, low temperature
The ____ of a machine is the factor by which it multiplies the force applied to the machine.
The mechanical advantage of a machine is the factor by which it multiplies the force applied to the machine.
Sam studied kinetic and potential energy by observing apples on a tree during a field investigation. Explain what type of energy these apples have.
Answer:
Gravitational Potential Energy
Explanation:
what is the second low of motion
Answer:
the law of force and accerleration
Explanation:
is the law where the acceleration of an object is directly related to the net force and inversely related to its mass
The bulb is not on because the switch is___
and there is a____in the circuit.
The bulb will come on if you___
Answer:
OPEN, INTERRUPTION, CLOSED
Explanation:
In this exercise, you are asked to complete the expression with the correct words.
Let's resist an important concept when a circuit has a path leaving a point and can return to the same point, it is said that the circuit is closed and current can circulate.
Now let's complete the expression is
The bulb is not on because the switch is__OPEN_
and there is a_INTERRUPTION___in the circuit.
The bulb will come on if you_CLOSED__
a small table has a mass of 4kg, stands on four legs, each leg having an area of 0.001 m2. what is the pressure exerted by the table on the floor?
Answer:
P = 10 kPa
Explanation:
Given that,
The mass of a small table, m = 4 kg
The area of each leg = 0.001 m²
We need to find the pressure exerted by the table on the floor. Pressure is equal to the force per unit area. So
[tex]P=\dfrac{mg}{4\times A}\\\\P=\dfrac{4\times 10}{4\times 0.001}\\P=10000\ Pa\\\\or\\\\P=10\ kPa[/tex]
So, the required pressure is 10 kPa.