Answer:
radio waves
Explanation:
Answer:
the answer is A radio waves
Two people travel from Columbus to Cleveland, one by car at an average velocity of 90km/h, and one by plane at an average velocity of 300km/h. Can their displacements be equal
Answer:
Explanation:
Yes , their displacement may be equal .
Suppose the displacement is AB where A is starting point and B is end point .
The car is covering the distance AB by going from A to B on straight line . On the other hand plane goes from A to C , then from C to D and then from D to B . In this way plane reaches B from A on a different path which is longer than path of the car . In the second case also displacement of plane is AB . In the second case distance covered is longer but displacement is same that is AB .
Please answer fast
A 50 kg boy jumps off the front of a 1.5 kg skateboard moving forward. Find the skateboard's velocity
immediately after the boy jumps, assuming that the skateboard's initial velocity is 3.5 m/s and the boy's
velocity when jumping off the front is 5 m/s?
Answer:
The speed is 1.35 m/s
Explanation:
(m1+m2) vi= m1+m2v2
(50+1.5) (3.5)=50 (5+v2) +1.5 v2
180.25= 250+ 51.5 v2
180.25- 250+ 51.5 v2
-69.75= 51.5 v2
v2= -1.35 m
A cart with an initial velocity of 5.0 m/s experiences a constant acceleration of 2.0 m/s2. What is the cart's displacement during the first 6.0 s of its motion? *
please help me .........................
Answer:
Dog2 has most kinetic energy .
B:324j
L
2/ If a large force is exerted on an object, when is
no work performed?
A. when the object moves
B. when the object does not move
C. when the power is too large
D. when there is no friction
plsss help me
what factors affect electrostatic force?
Answer:
The first factor is the amount of charge on each object. The greater the charge, the greater the electric force. The second factor is the distance between the charges. The closer together the charges are, the greater the electric force is.
Explanation:
Kate is pulling her doll in a wagon. Which arrow shows us the force of Kate pulling the wagon?
Answer:
3
Explanation:
Trust me its the right answer
A change in the thermal energy can cause other changes to occur in the
substance. Which of the following could occur as a result of decreasing
the thermal energy of a gas? *
Answer:
The gas will change to a liquid
Explanation:
Basically condensation happens
If an element forms a 2+ ion, in which group of the periodic table would you expect to find it? A. 2 B. 1 O c. 17 D. 18
Answer:
A
Explanation:
It would be with the group 2 metals.
5. Aunt Jane weighs 145 pounds. What is her weight in Newtons?
Answer:
i think its 644
Explanation:
How many atoms are in 3MgCl2?
Answer:
3MgCl2 has 9 atoms.
Explanation:
The Element Magnesium (Mg) has 3 atoms.
The Element Chloride (Cl) has 6 attoms.
Their fore 6 + 3 is 9 of course. 3MgCl2 has 9 atoms.
BTW: 3MgCl2 is a molecular compound as well as H2O and CO2.
Mr. Bennet's class completed an investigation on magnetism. They found that most metals were attracted to magnets and plastics were not. What will happen if Mr.
Bennet's class repeats the investigation?
A most metails would be attracted to magnets and plastics would not.
B plastics would be attracted to magnets and metals would not.
C both metals and plastics would be attracted to magnets.
D neither metals nor plastics would be attracted to magnets.
Answer:
A
Explanation:
When you increase the volume with constant temperature, what happens
to the pressure?
- increases
- decreases
- stays the same
Answer:
Pressure increases
Explanation:
"Gay Lussac's Law - states that the pressure of a given amount of gas held at constant volume is directly proportional to the Kelvin temperature. If you heat a gas you give the molecules more energy so they move faster. This means more impacts on the walls of the container and an increase in the pressure."
help me please its due in ten minutes
Answer:
relative age
Explanation:
i remember this test
If a cliff jumper leaps off the edge of a 100m cliff, how long does she fall before hitting the water? (assume zero air resistance)
Hello,
QUESTION)Assuming that the initial velocity of the jumper is zero, on Earth any freely falling object has an acceleration of 9.8 m/s².
✔ We have : a = v/Δt = ⇔ Δt = v/a
Δt = (√2xgxh)/9,8 Δt = (14√10)/9,8Δt ≈ 4,5 sIf a cliff jumper leaps off the edge of a 100 m cliff , then she would have fallen 4.51 seconds before hitting the water.
What are the three equations of motion?There are three equations of motion given by Newton,
v = u + at
S = ut + 1/2 × a × t²
v² - u² = 2 × a × s
As given in the problem If a cliff jumper leaps off the edge of a 100 m cliff, then we have to find out how long she falls before hitting the water.
By using the second equation of the motion,
S = ut + 1/2 × a × t²
100 = 0 + 0.5 × 9.8 × t²
t² = 100 / 4.9
t = 4.51 seconds
Thus, If a cliff jumper leaps off the edge of a 100 m cliff, then she would have fallen 4.51 seconds before hitting the water.
To learn more about equations of motion here, refer to the link given below ;
brainly.com/question/5955789
#SPJ2
A student observes a model of two bonded atoms. She is told that both atoms are nonmetals. Which of the following is a valid conclusion?
A. The student is looking at a model of atoms held together by a covalent bond.
B. The student is looking at a model of a metalloid.
C. The student is looking at a model of a crystal lattice.
D. The student is looking at a model of atoms held together by an ionic bond.
Answer:A
Explanation: it’s a covalent bond plus i just took mines
Which of the following is equal to impulse?
A. Ft
B. m/s
C. pt
D. mv
explain about the laws of reflection
Answer:
The law of reflection states that the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.
Explanation:
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PLEASE HELP ILL GIVE CROWN!!!!!!!!!!!!!!!
the farther you live from an ocean, the more likely you will have...
A ) Little to no temperature change from summer to winter.
B ) A tropical climate
C ) Extreme temperature differences in summer and winter
D ) An Arctic climate
Answer:b
Explanation:
took test, might be wrong
Answer:
C ) Extreme temperature differences in summer and winter
Explanation:
can i get the crown please hhehehh hahahhah lol
Why is it not suitable to determine the volume of an irregular charcoal using displacement method
Answer:
Displacement method of volume measurement is no suitable
Explanation:
Displacement method of volume measurement is no suitable for the objects that do not get immersed into the water completely because of the hindrance in accuracy of the measurement.
What is "Motion?"
Any physical movement or change of position of an object
When an object is square
When An object is standing still
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In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time. One can also speak of motion of images, shapes, and boundaries.
Movement of any object from one position to another position with respect to the observer is called as Motion. Motion Along a Straight Line: When an object moves along a straight line, the motion of the object is called rectilinear motion. For example; motion of a car on highway.
In physics, motion is the change in position of an object with respect to its surroundings in a given interval of time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, and speed. An object's motion cannot change unless it is acted upon by a force.
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Hope It Helps!
11. Improvement on communication skill is a
A. Social Benefits
B. Emotional Benefits
C. Mental Benefits
D. Physical Benefits
12. Reducing anxiety, depression, and negative mood.
A. Social Benefits
B. Emotional Benefits
C. Mental Benefits
D. Physical Benefits
13. Have stronger bones, muscles and joint and lower risk of developing osteoporosis.
A. Social Benefits
B. Emotional Benefits
C. Mental Benefits
D. Physical Benefits
Answer:
11.A
12.C
13.D
Explanation:
12.might be emotional benefits but they are often associated with our mental health , which is why I gave the answer C . its up to u now
Camina con otro compañero, al mismo tiempo y al mismo paso. Quién se mueve tú o tu compañero? Razona tu respuesta
Answer:
Fricción.
Explicación:
Caminando con otro compañero al mismo tiempo y al mismo ritmo, el movimiento se produce debido a la fricción del suelo y la suela de los zapatos porque la fricción es la fuerza que ayuda en el movimiento de los objetos de un lugar a otro. Si no hay fricción entre el suelo y la suela de los zapatos, no podemos dar un paso por lo que podemos decir que la fricción nos mueve hacia adelante.
A)This part controls the amount of light entering the eyes. A= Iris B= Pupil Give reason for your answer.
Answer:
Iris
Explanation:
Iris can be described as a part of the eyes which regulates the amount of light that enters the eye. The iris is made up of various muscles that control the size of the pupil
When a person is in a well-lighted room, the iris decreases the size of the pupil so that a low amount or medium amount of light is absorbed into the pupil. Also when an individual steps into a dark room the iris increases the size of the pupil so that a high amount of light penetrates the pupil.
Hence without the iris the amount of light that enters the eye cannot be controlled.
Is the answer is right?
Answer:
Yes please
Explanation:
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Answer:
c. 300 J
Explanation:
Given
Power (p) = 10 W
Time (t) = 0.5 minutes = 30 seconds
Energy (E) = ?
We know
p = E/t
10 = E / 30
E = 300 Joule
PLS HELP
1.) When there are equal forces from opposite directions acting on an object, the forces are said to be which of the following? (4 points)
A.) Positive
B.) Negative
C.) Balanced
D.) Gravitational
2.) If you want to cause an object to move, what should you do? (4 points)
A.) Apply balanced forces.
B.) Apply neutral forces.
C.) Apply potential forces
D.) Apply unbalanced forces.
Answer:
B
Explanation:
A 100 N force is applied to a pulley to lift a 500 N object. What is the actual mechanical advantage of the pulley?
Please help, I'm tired of trolls.
Two magnets are arranged so that they pull together. Which conclusion can be reached? A.Two north poles are together. B. Two south poles are together. C. The poles of the magnets are touching. D. A north pole is near a south pole.
Answer:
Answer is D. a north pole is near a south pole
Explanation:
Hope this helps!! :D
Amoeba have mitochondria. What is the name of the process that breaks down glucose sugar into usable energy for the cell? (2 words)
Answer:
cellular respiration
Explanation: