Answer:
72000 miles
Explanation:
If the distance between the students is 600 miles, and this implies in a 3 degree difference in the sun position, that means this 600 miles is related to 3 degrees of the circunference of the planet.
So, to find the whole circunference of the planet, that is, 360 degrees, we just need to use a rule of three:
3 degrees -> 600 miles
360 degrees -> x miles
3x = 600 * 360
x = 600 * 360 / 3 = 72000 miles
60m27Co → 6027Co Predict the type of radioactive emission produced from the decay of metastable cobalt-60 to cobalt-60. Describe this type of emission and its reaction to an electric field. A) During the radioactive decay, alpha particles are released. These positive particles are attracted to the negative plate in the electric field and represent a ground energy level. B) Beta particles are released during the radioactive decay. These negative particles are attracted to the positive plate in the electric field and represent an excited energy state. C) Radioactive gamma decay is produced by the reaction. This neutral electromagnetic radiation allows the isotope to return to its ground state and is not attracted to the electric field. D) Both types of radioactive emissions, particles and electromagnetic radiation, are produced during this decay. None of these are attracted to the electric field and both present an intermediate level. Eliminate
If the temperature of an object is 30° C, which of the following temperatures would indicate the MOST heat that was removed from this object? A. A. 40° C B. B. 30° C C. C. 20° C D. D. 10° C
Answer: 10° C
Explanation:
The heat loss from the body can be defined as the condition in which the heat is moved out from the body and the body cools down.
In this case the heat from the body is lost so that its overall temperature decreases. This states that the temperature of the body should be below 30° C.
If most of the heat from the body having 30° C is removed, the correct option will be 10° C. The heat loss is 20° C in this case.
Hence, the correct answer is option D.
Answer:
The answer is D. I hope this helped you. I just did this same question.
Explanation:
In acceleration, if you were taking distance measurements of a free falling
object at one-second intervals, you would see the object moving ______ at each measurement interval.
A. the same amount
B. less and less
C. farther
D. a small amount
Answer:
C --> Farther
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As light from a star spreads out and weakens, do gaps form between the photons?
Answer:
There are no gaps in space between the photons as they travel. If you were to look at a wave then you'd come to a conclusion that indeed that there aren't any gaps unless they are specifically placed.The light from a distance star indeed spreads out and weakens as it travels, but this just reduces the wave strength and does not introduce gaps.
a.
Which of the following statements best describes the relationship between the environment and human health?
The environment is the only factor that affects human health.
b. Many aspects of the environment can have an impact on human health.
Human health is impacted by changes in climate.
d. The environment has no impact on human health.
C.
Please select the best answer from the choices provided
O A
OB
С
OD
Statements A best describes the relationship between the environment and human health.
What is the environment?A set of physical, chemical, and biotic elements and living creatures that interact with an organism or ecological community to determine its shape and survival.
The environment is the only factor that affects human health.
Human health and well-being require a clean environment. At the same time, the surrounding environment can be a source of stressors that harm health, such as air pollution, noise, and dangerous substances.
Hence, statements A best describes the relationship between the environment and human health
To learn more about the environment, refer to the link;
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the relationship between frequency and wavelength is:
a. direct
b. inverse
c. not related
Answer: A
Wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength.
please help!!!!
An increase in oil exploration has lead to an increased demand for this mineral produced in Nevada.
A) barite
B) fluorite
C) pyrite
D) sphalerite
Answer:barite
Explanation:barite is in fuel
Which object experiences the greatest gravitational force? A)car B)fire truck C)plane D)human
Answer: C Plane
Explanation: According to Newton's law, gravitational force is proportional to the product of masses and inversely proportional to the square of distance between them.
Gravitational force depends on mass. The bigger the mass, the more the magnitude of the gravitational force. Since plane is assume to have the highest mass in the options, we can therefore conclude that plane will experience the highest gravitational force.
Which is an example of a compound machine?
ramp
bicycle
crowbar
seesaw
Answer:
A bicycle.
Explanation:
A compound machine is a machine consisting of multiple simple machines.
A bicycle contains 3 simple machines. A lever, pulley, and wheel-and-axle.
all other choices are simple machines.
Hope this helps!
-MoCKEry
Answer:
I think its bicycle
Explanation:
How do you describe the frequency of waves perceived by the observer from the moment the source appears to the moment it disappears ?
Answer: the frequency increases and decreases.
Explanation: According to doppler effect, the frequency of waves tends to increase as the source approaches and decrease as the source disappears.
The Doppler effect occurs when a source of waves and/or observer move relative to each other, resulting in the observer measuring a different frequency of the waves than the frequency that the source is emitting.
HELP ME I'M DESPERATE PHYSICS EASY 40 POINTSS
1.A car moving with a speed of 108 km/h is brought to rest in a distance of 60 m. How much time did the car take to stop?
2 seconds
4 seconds
6 seconds
8 seconds
2.A student standing on the ground next to a tall building throws a ball straight up with a speed of 39.2 m/s. If it takes the ball 4 seconds to reach the same height as the top of the building, how tall is the building?
a.44.1 m
b.78.4 m
c.161.7 m
d.235.2 m
3.A boy throws a ball with an initial velocity of 19.6 m/s and it returns to his hands in 4 seconds. What maximum height does the ball reach?
4.9 m
9.8 m
19.6 m
39.4 m
Answer:
1.ans. The car take 2 seconds to stop.
The Bohr model of the atom suggest that the protons and neutrons are found in the nucleus and the electrons orbit the nucleus much like planets around the sun. How is our modern model of the atom different from this model? A) Neutrons are not found in the nucleus. B) The nucleus is much larger than first thought. C) The electrons contain smaller parts called quarks. D) The electrons move around the nucleus in an electron cloud
Answer:
I think it is D
Explanation:
the Bohr model says that electrons whizz around the atomic nucleus in the same way that the earth goes around the sun - but rather than being bound by gravity, it is bound by electromagnetic forces.
50pts What is the medium of sound? Question 2 options: water solids gases air, liquids, or solids
Answer:
A medium is just a material through which an energy wave can propagate. This can include air, steel, glass, etc.
Its water solids gases air
Answer:
hey!
your answer is
Sound medium is a substance in which sound waves travel. Air, for example, is a sound medium.
Explanation:
solids and water are also mediums
hope this helps
if plotted the voltage or current produced by an alternator forms a curve called a _____ wave.
A. Pulsed
B. Hertz
C. Sine
D Sawtooth
Answer:
the correct answer in the C wave type sine
Explanation:
In an alternating energy system the wave formed is a sine wave. Therefore it is said that the current or voltage produced is a sine wave toppi but
V =V₀ sin (kx-wt)
therefore the correct answer in the C wave type sine
if it takes 150N of force to move a box 10 meters. what is the work done on the box?
Answer:
1500 Joules
Explanation:
Work = Force x Distance
When multiplying by 10 you simply shift all the digits to the
left and append a 0 to the end.
so 150 x 10 = 1500 Joules
Answer:
1500J
Explanation:
w = fd
f=150N. d=10meters
f= (150)(10)
f= 1500 J
A girl standing on top of a roof throws a stone into the air with velocity +v. She then throws a similar stone directly downwards with a velocity -v. Compare the velocities of both stones when they reach the ground.
Answer: The two stones will have different final velocity due to different distance covered ( height ) reaching the ground at different time.
Explanation:
Throwing a stone into the air with velocity +v means she throws the stone with an upward velocity. She then throws a similar stone directly downwards with a velocity -v.
The two stones will have different final velocity due to different distance covered ( height ) reaching the ground at different time.
equation for pressure at a depth H inside a fluid PLSS URGENTT
Answer:
We begin by solving the equation P = hρg for depth h: h=Pρg h = P ρ g . Then we take P to be 1.00 atm and ρ to be the density of the water that creates the pressure.
As the car goes through the valley in part A the car's speed is 15 m/s, its mass is 20 kg and the radius of valley (r) is 5 meters, determine the magnitude of the centripetal force acting on the car. *
Answer:
Centripetal force, F = 900 N
Explanation:
We have,
Speed of a car is 15 m/s
Mass of the car is 20 kg
Radius of the valley is 5 m
It is required to find the magnitude of the centripetal force acting on the car. The centripetal force acting on the car is due to the motion in circular path. The centripetal force is given by :
[tex]F=\dfrac{mv^2}{r}\\\\F=\dfrac{20\times (15)^2}{5}\\\\F=900\ N[/tex]
So, the centripetal force of 900 N is acting on the car.
What is the function of the cornea?
Its opening allows light rays to enter the eye.
Its muscles control its shape to help focus light.
Its inner surface sends nerve impulses to the brain.
Its curved surface focuses light.
Answer: B
Its muscles control its shape to help focus light.
Explanation:
The main function of a cornea is to help focusing the light ray into the eye lens.
Eyelids opening allows light rays to enter the eye.
While optic nerve inner surface sends nerve impulses to the brain.
Cornea can also function as a window lens that focuses light into the eye lens with its ability to refract and bend light into the eye lens.
Answer:
Its curved surface focuses light
Explanation: (Gradpoint)
During a workout, a football player pushes a blocking dummy a distance of 30 m. While pushing the dummy the same distance
a second time, what would the player need to change to be certain that power output increases?
The player would need to use a greater force and take more time.
The player would need to use a greater force and take less time.
The player would need to use a smaller force and take more time.
The player would need to use a smaller force and take less time.
Answer:
The correct option is (b).
Explanation:
The output power of any object is given by the work done divided by time taken i.e.
[tex]P=\dfrac{W}{t}\\\\P=\dfrac{Fd}{t}[/tex]
F is applied force
t is time taken
To increase the power output, the player would need to use a greater force and take less time. Hence, the correct option is (b).
Why is energy required to compress a spring?
A) the spring has chemical bonds
B) the spring is at room temperature
C) thé position of the spring is being changed
D) the spring is metal
The load across a 120-V power supply consists of three resistances are R1 = 10 Ω, R2 = 30 Ω, and R3 is unknown. If R2 has a difference of potential of 45 V across it, find the other voltage drops across the other resistors, the current through each resistor, and R3.
which organism is a producer
1-oak tree
2-mushroom
3-mountain lion
4-butterfly
Answer:
Answer 1, oak tree
Explanation:
producer organisms are organisms that are mostly photosynthetic organisms like plants, some bacterias and unicellular organisms like euglena.
So the answer is 1 an oak tree because it is photosynthetic.
To see the others mushroom may be a plant like organism but it is not photosynthetic because it doesn't contain chlorophyll.
Mountain lions are not photosynthetic that means they are heterotrophs( organisms that cann't make their own food).
And butterflies are also heterotrophs
• D= 50 m
• S= 40 m/s
• T= ?
Answer:
1.25s
Explanation:
D = 50m
S = 40 m/s
T = ??
D = S × T
50m = 40 m/s × T
50/40 = T
5/4 = T
1.25s = T
wind blows at the speed of 30m/s across a 175m^2 flat roof if a house.
what is the pressure difference between inside the house and the outside of the house just above the roof? (assume the air pressure inside the house is atmospheric pressure)
what is the force on the roof due to pressure difference?
The pressure difference between inside the house and the outside of the house is 540 Pa.
Pressure based problems:Using Bernoulli's equation.
[tex]P1+\frac{1}{2} \rho v1^2 = P2 + \frac{1}{2} \rho v2^2 \\\\P1 + 0 = \delta P = \frac{1}{2} \rho v2^2 \\\\\delta p = \frac{1}{2}(1.2)(30)^2\\\\\delta p = 540 pa[/tex]
Using pressure definition:
ΔP = F / A
F = 9.45 × 10⁴ N
Find out more information about 'Pressure'
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If this sound wave hits this surface at the angle shown, choose the picture that shows how
it will reflect.
A. sound
wave
sound
wave
C.
sound
wave
sound
wave
surface
surface
surface
surface
sound
wave
sound
wave
D
sound
wave
sound
wave
surface
surface
surface
surface
What is the kinetic energy of a 24-kg mass that is moving with a velocity of 2 m/s?
Answer:
1/2mv^2
1/2*24*2^2
answer=48
Answer:
48 J
Explanation:
Kinetic energy can be found using the following formula:
[tex]KE=\frac{1}{2}mv^2[/tex]
where m is the mass in kilograms and v is the velocity in m/s.
We know the mass is 24 kilograms and the velocity is 2 m/s Therefore, substitute 24 in for m and 2 in for v.
[tex]KE=\frac{1}{2}*24*2^2[/tex]
Evaluate the exponent first. 2^2 is the same as multiply 2, 2 times.
2^2=2*2=4
[tex]KE=\frac{1}{2}*24*4[/tex]
Multiply 24 and 4
[tex]KE=\frac{1}{2} *96[/tex]
Multiply 96 and 1/2, or divide 96 by 2.
[tex]KE=48[/tex]
Add appropriate units. Kinetic energy uses Joules, or J
[tex]KE=48 Joules[/tex]
The kinetic energy is 48 Joules
How much time will it take for a bug to travel 5 meters across the floor if it is
traveling at 1 m/s?
5 m
5 m/s
6 m/s
55
Answer:
It will take 5 seconds
Explanation:
A high-speed truck and a BUG have a head-on collision. The bug is crushed, while nothing happens to the truck. Do they hit each other with equal force?
Answer:
No
Explanation:
If they hit each other will equal force, the truck would have stopped too.
Answer:
They do not hit each other with equal force.
Explanation:
A bug does not weight as much as a truck.
There is force of 10 Newtons between two charged particles. If one charge is
doubled, what is the force now?
5 N
10 N
OZN
20 N