Answer:
D.Elastic energy| Magentic energy
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
What work is done when we apply a force of 5N and move in the direction of the force 2m?
Answer:
10 J
Explanation:
work = force x distance
work = 5x2
work = 10 J
Joule is the unit for work
What is the speed of a walking person in m/hr if the person travels 1000 m in 30 minutes?
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
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__
What does Newton's first law of inertia tell you about the difference between motion in a straight line and motion along a curve.
Answer:
Newton's first law says that without external forces, your velocity doesn't change. Remember that velocity is both how fast you're going but also what direction you're going.
Normally, a car turns because the tires on the ground have traction so they have friction which allows them to change direction and turn. But on an icy highway, tires can't get much friction so it's really hard to turn.
Because the ice stops friction, a car can't get enough force to change direction and follow the curve, meaning it will try and stay going in the same direction, which is dangerous.
in of the Solar System
When the ancient Greeks looked at the night sky they noticed that some points of light seem to wander" in the sky
Which term do we use for these wanderers today?
nebulae
moons
stars
1 planets
2 moons
3 stars
4 Planets
Answer:
stars #3
Explanation:
they didn't know it was stars
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
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 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 coin is dropped in a 15.0 m deep well.
A)How long does it take the coin to hit the surface of the water?
B)How much time would it take to hear the splash after dropping the coin if the speed of sound is 340. m/s?
Answer:
t = 1.75
t = 0.04
Explanation:
a)
For part 1 we want to use a kenamatic equation with constant acceleration:
X = 1/2*a*t^2
isolate time
t = sqrt(2X / a)
Plugin known variables. Acceleration is the force of gravity which is 9.8 m/s^2
t = sqrt(2*15m / 9.8m/s^2)
t = 1.75 s
b)
The speed of sound travels at a constant speed therefore we don't need acceleration and can use the equation:
v = d / t
isolate time
t = d / v
plug in known variables
t = 15m / 340m/s
t = 0.04 s
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:
match the microscopes with their useable
Answer:
there is no question that I can use so sorry
Explanation:
but have a great day :D
please help me thank youuuu !!!!
Answer:
D. Left
Explanation:
The question is worded weirdly, but based on the fact that heat transfers from hot to cold and the temperature on the right is warmer than the temperature on the left, I would say that the heat is flowing from the box on the right to the box on the left.
I hope this makes sense and was helpful! ☺
Answer:
A or up
Explanation:
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
Which description best contrasts herbivores and carnivores? Herbivores have specialized teeth and digestive systems, whereas carnivores require no diet specialization. Herbivores are able to digest food with relative ease, whereas carnivores have to soften food with bacteria. Herbivores work harder to find and eat food, whereas carnivores are most often scavengers that expel little energy. Herbivores eat frequently in order to sustain nutrients, whereas carnivores eat more nutritious meals less often.
Answer:
Herbivores have special teeth and digestive enzymes to digest their food while carnivores do not have digestive enzymes
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 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
Please help find the total resistance of these circuits!! I will mark brainliest if right!!
Answer:
If you know the total current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.
Explanation:
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:
please help me with this!!!
Answer:
I think the answer is C :)
Explanation:
What part of the atom contains the protons and neutrons?
The atom
The electron cloud
The nucleus
The bottom part
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
The geese fly 23 m/s to the south when they migrate for the winter. Identify if this example is speed or velocity.
Answer:
Its velocity.
A net force accelerates a 60 kilogram cart at a rate of 0.5 m/s². What is the magnitude of the force?
Answer:
13
Explanation:
34
Can someone please help me I don’t understand this
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
which one is this one How does the author describe the conditions for women at the Blackfeet Reservation in Montana?
Answer: b
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.
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