Solids can be classified into two types: crystalline and amorphous. Crystalline solids are the most common type of solid. They are characterized by a regular crystalline organization of atoms that confer a long-range order. Amorphous, or non-crystalline, solids lack this long-range order.
Help me please :))))))
Answer:
first one is d second is a
Explanation:
hope this helps luv
advantages and disadvantages of a secondary cell
Answer:
i hope this helps!!!!
!!!have a good day!?! <3
A student buys a plastic dart gun and tries to find the maximum horizontal range. The student shoots the gun straight up and it takes 3.7 seconds for the dart to return back to the height of the barrel. What is the maximum horizontal range of the gun?
Answer:
The value is [tex]R_{max} = 33.54 \ m[/tex]
Explanation:
From the question we are told that
The total time of flight is [tex]t = 3.7 \ s[/tex]
Generally from kinematic equation
[tex]v = u - g * \frac{t}{2}[/tex]
So v is the velocity at maximum height and the value is v = 0 m/s
So
[tex]0 = u - 9.8 * \frac{ 3.7}{2}[/tex]
=> [tex]u = 18.13 \ m/s[/tex]
Here u is the initial velocity of the dart as it leaves that gun
Gnerally the horizontal range of the dart is mathematically represented as
[tex]R = \frac{u ^2 sin 2\theta }{g}[/tex]
For maximum horizontal range the value of [tex]\theta = 45^o[/tex]
So
[tex]R_{max} = \frac{ 18.13 ^2 sin 2(45) }{9.8}[/tex]
=> [tex]R_{max} = 33.54 \ m[/tex]
a car travels 200km in 3.0 hours. Determine the average velocity of the car
Answer:
66.67 km/hrExplanation:
The average velocity of the car can be found by using the formula
[tex]a = \frac{d}{t } \\ [/tex]
d is the distance
t is the time taken
From the question we have
[tex]a = \frac{200}{3} \\ = 66.66666...[/tex]
We have the final answer as
66.67 km/hrHope this helps you
Can someone help me with this?
Answer:
imk
B. the strength of the gravitational force between two objects increases as the total mass of the object increases.
Answer:
A, B, And C!
Explanation:
D is wrong because your weight will change but your mass won’t .
How many atoms of sodium do you have if you have one mole of sodium?
Answer:
multiply the number of moles of Na by the conversion factor 6.02214179×1023 atoms Na/ 1 mol Na, with 6.02214179×1023 atoms being the number of atoms in one mole of Na (Avogadro's constant), which then allows the cancelation of moles, leaving the number of atoms of Na.
Answer:
the answer is
6.022×10²³ na...
An asteroid orbits the Sun every 176 years. What is the asteroids average distance from the Sun? P ^ 2 = a ^ 3 where p = period in years and average orbital distance in AU 233 years 1.46 AU 5.45 years 3.09 years
Answer:
The value is [tex]x = 45.99 \ Au[/tex]
Explanation:
From the question we are told that
The period of the asteroid is [tex]T = 176 \ years = 176 * 365 * 24 * 60* 60 = 5.55*10^{9}\ s[/tex]
Generally the average distance of the asteroid from the sun is mathematically represented as
[tex]R = \sqrt[3]{ \frac{G M * T^2 }{4 \pi} }[/tex]
Here M is the mass of the sun with a value
[tex]M = 1.99*10^{30} \ kg[/tex]
G is the gravitational constant with value [tex]G = 6.67 *10^{-11} \ m^3 \cdot kg^{-1} \cdot s^{-2}[/tex]
[tex]R = \sqrt[3]{ \frac{6.67 *10^{-11} * 1.99*10^{30} * [5.55 *10^{9}]^2 }{4 * 3.142 } }[/tex]
=> [tex]R = 6.88 *10^{12} \ m[/tex]
Generally
[tex]1.496* 10^{11} \ m \to 1 Au (Astronomical \ unit )[/tex]
So
[tex]R = 6.88 *10^{12} \ m \ \ \ \ \to \ \ x \ Au[/tex]
=> [tex]x = \frac{6.88 *10^{12}}{1.496 *10^{11}}[/tex]
=> [tex]x = 45.99 \ Au[/tex]
What has more energy a 2 kg mass at 10 m/s or a 2 kg mass 5 m above the ground
Answer:
Both have same energy
Explanation:
Given:
Sample 1
Mass m = 2 kg
Velocity v = 10 m/s
Sample 2
Mass m = 2 kg
Height h = 5 m
Assume g = 10 m/s²
Find:
What has more energy
Computation:
In sample 1
Ke = 1/2(m)(v)²
Ke = 1/2(2)(10)²
Ke = 100 joule
In sample 2
Pe = mgh
Pe = (2)(10)(5)
Pe = 100 joules
Both have same energy
new stars form from ?
An electric current consists of moving
A) atoms
B) electrons
C) elements
D) molecules
A) atoms
B) electronsC) elements
D) molecules
which chemical reaction is fastest
B BRIANLIEST PLS
Explanation:
A Car accelerates from 4 m/s to 16 m/s in 4 seconds. What is the car's
acceleration?
O 12 m/s^2
3 m/s^2
4 m/s^2
O 1 m/s^2
Answer:
4 m/s^2
that is the right acceleretion a car
Answer:
I believe that the answer is 3 m/s^2
Explanation:
since acceleration is final velocity minus initial velocity divided by time, we can plug in known values and solve.
a=(f-i)/t
a=(16-4)/4
a=12/4
a=3
3m/s^2 is the acceleration
What does a represent??
I need it quick
Answer:
a is acceleration
Explanation:
HELP ASAP
The Target employees are working hard to get the orders out to everyone. The employees need to move packages from the ground level to the top of the loading dock platform. As shown in Figure 1, the employee pushes the package up a ramp (you may assume friction is negligible). In figure 2, the employee lifts the package straight up from ground to the loading dock platform. In which case does the employee do more work on the box and why?
a
Lifting the box straight up, because the incline acts as a simple machine and reduces the force required
b
Lifting the box straight up, because it requires a larger applied force to lift it straight up
c
Pushing the box up the incline, because the force is applied for a longer distance
d
Neither method, because the work is the same in both cases, since using the ramp decreases the force by the same factor that it increases the distance
Answer:
I believe the answer is B
If the person's velocity is changing is the person
accelerating
Answer:
a change in velocity can be a change in magnitude (or speed), but it can also be a change in direction.
For every action, there is an equal and opposite reaction” is a definition of _________
Answer:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
Answer: action, opposite
Explanation:
Need some help with homework but where doing it in class rn
Answer:
now it lets me. B
Explanation:
hope that helps
Forces affect motions in living and nonliving things. In a human, swallowed food moves down the esophagus into the stomach, even if the human is upside down doing a handstand. Which force moves food through the esophagus into the stomach?
Answer:
figured it out its d the last one
Food is moved through the esophagus by the push force created by esophageal contractions. Option D is the right response as a result.
What is the second law of Newton?The resultant force exerted on an object is proportional to the rate of change of momentum, according to Newton's Second Law.
Food is forced into the stomach by the constriction of the esophagus during the process of traveling down it.
As food travels down the esophagus, it is driven into the stomach by the narrowing of the esophagus.
Option D is the right response as a result.
Learn more about Newton's second law here, refer to the link;
brainly.com/question/13447525
#SPJ6
Which of the following objects in motion has the highest inertia?
A.) A 5.0 kg mass moving at 2.0 m/s
B.) A 8.0 kg mass moving at 9.0 m/s
C.) A 6.0 kg mass moving at 10. m/s
D.) A 15 kg mass moving at 2.0 m/s
Answer:
D.) A 15 kg mass moving at 2.0 m/s
Explanation:
The inertia of an object is most directly related to its mass and not the magnitude of the velocity.
So, the higher the mass of an object, the more its inertia.
According to Newton's first law of motion "an object will remain in its state of rest or of constant motion unless it is acted upon by an external force".
Inertia is the tendency of a body to remain in a state of rest either by virtue of its static position of constant motion. The larger the mass, the more this tendency. An object with a large mass will take more force to bring it from rest or change its motion.please i’m begging literally anyone to help me with this. it was due 30 minutes ago
a roller coaster travels 6 meters in 3 seconds what is thr kinetic energy of the coaster if its 250 kg
a. 14700 J
b. 4500 J
c. 750 J
d. 500 J
Answer:
500
Equation used:
(1/2 * 250kg) * 2 m/s^2
Hope i'm right
is it possible that the existence of two different angle of incidence of a single angle of deviation
Answer:
Yes
Explanation:
It is possible that the existence of two different angle of incidence of a single angle of deviation.
This is possible according to the principle of the reversibility of light which explains its formed in a prism.
When a ray is incident on the first surface it then emerges out of the second surface and could allow another ray to be incident on second.
A component that is used to break a circuit is
(1 Point)
Wire
Switch
Bulb
Electric cell
A student exerts a 2N for on a wall. What is the magnitude of the force the wall exerts on the student?
Answer:
Fr = 2 [N]
Explanation:
To solve this problem we must use Newton's third law which tells us that the force applied on a body at rest is equal to the reaction force that acts in the opposite direction and with equal magnitude to the force applied.
Since the wall does not move when applying force, then it remains static (there is no movement)
We can use Newton's third law and say that the sum of the forces on the body is equal to zero. In this way, we propose the following equation.
∑F = 0
[tex]F-F_{r}=0[/tex]
where:
F = force = 2 [N]
Fr = reation force [N]
Therefore.
[tex]2-F_{r}=0\\F_{r}=2[N][/tex]
You are in a plane, and hit a bird as your flying, how can this impact produce a large impulse, despite the plane being much bigger
It effects the balance of the plane, and slows it. Also you are likely moving faster than the bird, and it would be almost as if you are hitting a brick. However when it makes the plane impulse then it means the sudden loss of speed (even if it is a small bird) that is keeping the plane in the air causes the planes engines to struggle for a short amount of time, while it tries to recover the little amount of speed it has lost (the engines HAVE to regain full speed or the plane will turn to the ground, maybe not ALL the way but it still will lower the nose.
Hope this helps,
Miri
Mining would be classified as a _____ human activity for the environment. Positive or negative
Answer:
do human activity for the
An object is moving east, and its velocity changes from 66 mvs to 26 mvs in 10 seconds. Which describes the
acceleration?
negative acceleration of 4 mvs
positive acceleration of 4 ms
positive acceleration of 9 m/a
negatlveo acceleration of 9 m/s
Answer:
negative acceleration of 4m/s²
Explanation:
Given parameters:
Initial velocity = 66m/s
Final velocity = 26m/s
Time taken = 10s
Unknown:
Description of the acceleration = ?
Solution:
Acceleration is the rate of change of velocity with time.
It is mathematically expressed as;
acceleration = [tex]\frac{v - u}{t}[/tex]
v is the final velocity
u is the initial velocity
t is the time taken
Now insert the parameters and solve;
Acceleration = [tex]\frac{26 - 66}{10}[/tex] = -4m/s²
So, we see a negative acceleration of 4m/s²
25.
Which person is following the advice listed in the tips for grocery shopping?
A:Tyler never writes a grocery list because it takes too long.
B:Becky looks at the grocery store ads to compare prices.
C:Henry always goes to the store hungry so that he will buy food that he is craving for the upcoming week.
D:Rachel buys everything she sees that is on sale even if she does not need it. Giving 20 points to who can answer this first
Answer:
B
Explanation:
that is the most common due to the fact that you can observe what you want before you make a purchase
Answer:
Explanation:
b
What two things does force depend on
Answer:
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance or (acceleration)
Explanation:
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How do ions help your brain?
