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.
Which do you think requires more Work, lifting a 100 N load a vertical distance of 2 m or lifting a 10 N load a vertical distance of 4 m?
Answer:
Lifting 100 N 2 meters is much more work.
Explanation:
Remark
The formula is F * d = W
Givens
F = 100 N
D = 2 m
or
F = 10 N
D = 4 m
Solution
Work = 100 * 2
Work = 200 Joules
Work = 10 * 4
Work = 40 J
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
Which person has kinetic energy but does not have potential energy?
Answer:
a person walking on a flat side walk
Explanation:
hope this helped :)
As the cross-sectional area of a conductor increases, its resistance .
Answer:
Yess it’s resistance
Explanation:
Answer:
DECRAAAASESSSS
Explanation:
please help me .........................
Answer:
Dog2 has most kinetic energy .
B:324j
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.
Where is the magnet that causes Earth’s magnetic field? What is this magnet made of?
HELPPPP PLEASEE!
Answer:
The magnetic field of Earth is created by currents of electricity that flow in the molten center.
Explanation:
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.
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:
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? *
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:
5. Aunt Jane weighs 145 pounds. What is her weight in Newtons?
Answer:
i think its 644
Explanation:
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
If a car has a velocity of 85 km/hr, how long will it take to accelerate to 45 km/hr if the acceleration is -3 km/hr/sec?
Answer:
Time, t = 13.34 seconds.
Explanation:
Given the following data;
Initial velocity, u = 85km/hr to meters per seconds = 85*1000/3600 = 23.61 m/s
Final velocity, v = 45km/hr to meters per seconds = 45*1000/3600 = 12.5 m/s
Acceleration, a = -3 km/hr/sec to meters per seconds square = -3*1000/3600 = -0.833m/s²
To find the time;
Acceleration = (v - u)/t
-0.833 = (12.5 - 23.61)/t
-0.833t = -11.11
t = 11.11/0.833
Time, t = 13.34 seconds.
Which of the following is equal to impulse?
A. Ft
B. m/s
C. pt
D. mv
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.
A panic attack can occur at anytime even in the absence of a stimulus.
Answer:
if this is true or false, its true i think (not 100% sure)
Explanation:
Why do you ask me that’s all me the moon seem like they’re walking on Spring tomorrow on earth we are from your tractor to the ground???
Point P is located 1.7 m from fixed point charge q. The electric field Ē at point P is 8.6 x
10-2 N/C, directed away from the point charge. What is the magnitude of q? Let the
electrostatic constant k = 8.99 x 10°N • m²/C2.
O
A. 2.8 10-11 C
0
B. 4.8 * 10-11 C
O.C. -4.8 x 10-11 C
D. 1.5 x 10-10
Answer:
2.8 × 10^-11 C
Explanation:
The computation of the magnitude of q is shown below;
The electric field at point P because of point charge Q is provided by,
E = 8.6 × 10^-2 N/C
And, the separation between charge Q and P is r = 1.7m
Now According to the Coulomb's law,
E = kQ ÷ r²
8.6 × 10^-2 = 9 × 10^9 × Q ÷ (1.7)²
8.6 × 10^-2 × 2.89 ÷ 9 × 10^9 = Q
Q = (8.6 × 2.89 ÷ 9) × 10^-11
Q = 2.76 × 10^-11 C
= 2.8 × 10^-11 C
Ted lifts a 10N weight at a height of 1.5 m in 1 second. Johnny lifts a 10N weight at a height of 1.5 m in 2 second. Which statements are correct? A. Johnny and Ted did the same amount of work B. Ted did more work C. Johnny and Ted expanded the same power D. Ted expanded more power E Johnny did more work F. Johnny expanded more power
Answer:
he affirmations the correct ones are: A and D
Explanation:
To find out which expressions are correct, let's calculate the work and power done by each person
the expression for work is W = F and
the expression for power is P = W / t
In this case the work is positive because the beast is in the same direction of displacement.
Ted
W₁ = 10 1.5
W₁ = 15 J
P₁ = 15/1
P₁ = 15 w
Johnny
the job
W₂ = 10 1.5
W₂ = 15 J
the potential
P₂ = 15/2
P₂ = 7.5 w
therefore we see that the work of both is the same, but Ted developed twice as much power as Johnny
when resisting the affirmations the correct ones are: A and D
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:
mark me as brainliest
Why are very high temperatures and pressures required for fusion to occur?
to generate the neutrons that are needed to break the nuclei
to overcome the repulsion between the protons in the nuclei that join
to maintain the proper conditions to keep the chain reaction going
to keep the uranium fuel separate from the control rods
Answer:
so as to over come the repulsion between the protons in nuclei that join
Explanation:
it requires high temperature so that the nucleus starts moving at rapid speed which in turn increases their kinetic
In nuclear reactions, very high temperatures and pressures required for fusion to occur so as to to overcome the repulsion between the protons in the nuclei that join.
What are nuclear reactions?There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.
In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.
In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.
Learn more about nuclear reactions,here:
https://brainly.com/question/16526663
#SPJ7
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
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.
True or False – All transformations fit the Law of Conservation of Energy.
Answer:
The correct answer is true.
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 the momentum of a 45-kg quarterback moving eastward at 15
m/s?
Answer:
Given
mass (m) =45kg
velocity (v) =15m/s
momentum (p) =?
Form
p=mv
=45x 15
p=675kg.m/s
the momentum =675kg.m/s
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
help me please its due in ten minutes
Answer:
relative age
Explanation:
i remember this test