Answer:
false plz mark brainliest
Help!!!!
Which locations would be considered a target hazard?
mailbox unit on a highway
city baseball field
bus or train station
neighborhood playground
Answer:bus or train station is the answer of your question
hope it is helpful to you
If a plane traveling down a runway at 75 m/s accelerates at a rate of 8 m/s’over
40 seconds, then what is its final velocity?
Answer:
395 m/s
Explanation:
Initial velocity (u) = 75 m/sAcceleration (a) = 8 m/s²Time taken (t) = 40 secondsBy using the first equation of motion,
❖ v = u + atv denotes final velocityu denotes initial velocitya denotes accelerationt denotes time→ v = 75 + 8(40)
→ v = 75 + 320
→ v = 395
→ Final velocity = 395 m/s_______ is in continuous motion in _____, spinning as it moves around the _______. Fill in the blank..
Answer: Earth is in a continuous motion in space, spinning as it moves around the sun.
(Hope this helped!)
Answer:
motion in space and moves around the sun
Explanation:
I hope this helps
A 2.2kg block of ice slides across a rough floor. Its initial velocity is 2.5m/s and its final velocity is 0.50m/s. How much of the ice block melted as a result of the work done by friction? (Latent Heat of water is 3.3*10^5J/kg)
Answer:A 2.2kg block of ice slides across a rough floor. Its initial velocity is 2.5m/s and its final velocity is 0.50m/s. How much of the ice block melted as a result of the work done by friction? (Latent Heat of water is 3.3*10^5J/kg)
Explanation:
The heat produced by friction between a skate and the ice during movement over the surface melts the topmost layer of ice. However, even when you are still, ice is still slick. When you remain still on ice, there is no friction to produce heat, but the ice is still slippery.
What ice melted as a result of the work done by friction?Although friction does generate heat, the amount of heat it produces is insufficient to melt ice that is at a very low temperature. But even at low temperatures, ice still creates a slick liquid layer. The formation of a slippery coating even when the item is totally still cannot be explained by frictional heating.
Therefore, A rough floor is traversed by a 2.2 kg lump of ice. It moves at a final speed of 0.50 m/s after starting out at 2.5 m/s. What portion of the ice block melted as a result of the friction's work? (Water has a latent heat of 3.3×105 J/kg.)
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the electric cell of internal resistance 0.5ohms delivers a current of 2 amperes when a resistance of 3 ohm is connected across it, find the electromotive force of the cell. Show all workings
Answer:
7 volts
Explanation:
Applying,
E = IR+Ir................ Equation 1
Where E = electromotive force of the cell, I = current. R = External resistance, r = internal resistance.
From the question,
Given: I = 2 amperes, R = 3 ohm, r = 0.5 ohm
Substitute these values into equation 1
E = (2×3)+(2×0.5)
E = 6+1
E = 7 volts
5. A new technique called adaptive optics allows astronomers to: a. change the eyepieces of their telescopes much more quickly than ever before b. compensate for changes in the Earth's atmosphere and achieve better resolution c. increase the aperture of their telescopes by connecting several telescopes d. change the region of the electro-magnetic spectrum in which their telescope is able to detect radiation e. use the observatory shop to make better eye-glasses for their graduate students
Answer:
b. compensate for changes in the Earth's atmosphere and achieve better resolution.
Explanation:
The adaptive optic is a technology that is used to enhance the application of optical system in reducing the impact from the incoming distractions. It is dine to reduce the optical abbrebrivation. It is also used for correcting the tip-tilt correction by using the segmented mirrors.Photo below with question, please help need to confirm answer
Is the answer A?
Answer:
Only circuit A will contain to lit bulbs
Two charges create 8.00 N of electric
force on each other. If you increase
their distance to twice its original
value, how much electric force do
they exert on each other?
(Hint: How does Fe change with distance?)
[?]N
Answer:
2.00 (right on acellus)
Explanation:
doubling the distance between two charges makes F (8.00) quarter, so you would just do 8.00*1/4.
Which equation is true of an atom with no elctrical charge
A. Number of nutrons = number of protons
B. Number of electrons = number of neutrons
C. Number of neutrons = number of protons + number of electrons
D. Number of electrons = number of protons
Answer:
Atoms are composed of electrons (charge -1), protons (charge +1), and neutrons (no charge). So in a neutral atom the correct answer is "D".
What is malware short for?
A. malingered software
B. Maltese hardly
C. malicious software
D. malfunctioning hardware
a car travels at 90 km per hour how much distance in metre does the car travel in 25 seconds
Answer:
90000m÷3600s=25m25m×25s=625msThink of Rutherford's experiment. Most alpha particles passed straight through, but a few were repelled so strongly that they were bounced back or deflected at large angles. This led Rutherford to conclude that the charge of the nucleus of an atom must be... what?
Answer:
Rutherford considered these observations and he concluded: The fact that most alpha particles went straight through the foil is evidence for the atom being mostly empty space. A small number of alpha particles being deflected at large angles suggested that there is a concentration of positive charge in the atom.
Hope it helps
Most alpha particles passed straight through, but a few were repelled so strongly that they were bounced back or deflected at large angles. This led Rutherford to conclude that the charge of the nucleus of an atom must be positive.
What are atomic models?There are some models that are used to explain the arrangements of subatomic particles inside the atom based on the atomic theory of atoms known as the atomic models.
As given in the problem statement Think of Rutherford's experiment. Most alpha particles passed straight through, but a few were repelled so strongly that they were bounced back or deflected at large angles.
Most alpha particles were resisted so strongly that they were bounced back or deflected at huge angles, but a handful did not.
Hence, Rutherford came to the conclusion that an atom's nucleus must have a positive charge as a result of this.
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True or False: Elements can unite chemically to form compounds.
Answer:
True
Explanation:
When two distinct elements are chemically combined—i.e., chemical bonds form between their atoms—the result is called a chemical compound. Most elements on Earth bond with other elements to form chemical compounds, such as sodium (Na) and Chloride (Cl), which combine to form table salt (NaCl).
Hope this helps!!
can someone help with the blank questions please?
Which organs are involved in the process of delivering the digestive juices for the intestines?
Stomach
Esophagus
Gall Bladder
Liver
Pancreas
Answer:
The Liver, Pancreas and Gall Bladder are involved in the process of delivering the digestive juices for the Intestines
Explanation:
Can someone please help meee!! >.<
One day, you went for a walk with your family on the beach. You noticed that there was a lot of trash and a large oil spill in the water. Please write in a long term paragraph.
The net vertical force on a box F as a function of the vertical position y is shown below.
Answer:
W = 0 J
Explanation:
Formula for work done is;
W = F × d
Where;
W is work done
F is Force
d is distance covered
What this means is that we will calculate the area under which the given times in the graph pass.
Thus;
At constant force of F = 40 N which falls in between distance of 0 m and 2m,
W1 = 40 × 2 = 80 J
At constant force of -20 n which will fall between distance of 2 m and 6 m which is 4m, we have;
W2 = -20 × 4
W2 = -80 J
Thus, total workdone is;
W = W1 + W2
W = 80 - 80
W = 0 J
Answer:
20 J
See attached for full answer and explanation. :)
A 10 kg sled is sliding down a hill at 5 m/s what is the Kinetic energy of the sled
Answer:
Explanation:
kinetic energy=1/2*mass*(velocity)^2
=1/2*10*(5)^2
=5*25
=125 joule
two parallel plates of area 5.68*10^-4 m^2 have equal and opposite charges of 8.38*10^-11 C placed on them. what is the electric field between the plates
Answer: unit n/c
Explanation: This should be the answer because I just asked my Physics Teachers I hope this is correct
Hope This Helps :)
The electric field between the plates will be 0.1667×10⁵ C.
What is an electric field?An electric field is an electric property that is connected with any location in space where a charge exists in any form. The electric force per unit charge is another term for an electric field.
The electric field formula is as follows:
E = F /Q
Where,
The electric field is denoted by the letter E.
F is Electric force
The charge is Q.
Given data;
Q (Charge)= 8.38 × 10¯¹¹ C ,
A (Area between the plates) = 5.68 × 10¯⁴ m²,
ε₀(permeability constant) = 8.85 × 10¯¹² C²/Nm²
[tex]\rm E= \frac{Q}{K \epsilon_0 } \\\\ \rm E= \frac{8.38 \times 10^{-11}}{5.68 \times 10^{-4} \times 8.85 \times 10^{-12} } \\\\ E= 0.1667 \times 10^5 \ N C^{-1}[/tex]
Hence,the electric field between the plates will be 0.1667×10⁵ C.
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plsssss asappppppppp
Answer:
20 meters.
Explanation:
In the graph, the x-axis (the horizontal axis) represents the time, while the y-axis (the vertical axis) represents the distance.
If we want to find the distance covered in the first T seconds, you need to find the value T in the horizontal axis.
Once you find it, we draw a vertical line, in the point where this vertical line touches the graph, we now draw a horizontal line. This horizontal line will intersect the y-axis in a given value. That value is the total distance travelled by the time T.
In this case, we want to find the total distance that David ran in the first 4 seconds.
Then we need to find the value 4 seconds in the horizontal axis. Now we perform the above steps, and we will find that the correspondent y-value is 20.
This means that in the first 4 seconds, David ran a distance of 20 meters.
A.149 kg baseball moving at 17.7 m/s is caught by a 57 kg catcher at rest on an ice skating rink, wearing
frictionless skates. With what speed does the catcher slide on the ice?
Do NOT put in units or it will be marked wrong! The answer's value only! Please round each answer to 3 places.
MaVa + MbVb = (Ma+b)(Va+b)
Answer:
v = 12.8 m/s
Explanation:
Applying the law of conservation of energy:
[tex]m_1u_1+m_2u_2=m_1v_1+m_2v_2[/tex]
where,
m₁ = mass of baseball = 149 kg
m₂ = mass of catcher = 57 kg
u₁ = initial speed of ball = 17.7 m/s
u₂ = initial speed of catcher = 0 m/s
v₁ = v₂ = v = final speed of ball and the final speed of catcher = ?
both are same because ball is in hands of cathcer in the final state.
Therefore,
[tex](149\ kg)(17.7\ m/s)+(57\ kg)(0\ m/s)=(149\ kg)(v)+(57\ kg)(v)\\\\v = \frac{2637.3\ kgm/s}{206\ kg}[/tex]
v = 12.8 m/s
Help please thank you
Answer:
A. 1 unit
B. 5 units
C. 8 units
Explanation:
Count the lines from each starting point to each destination.
How is a cell phone similar to a radio or a television set?
Answer:
A similarity is that they all pick up radio signals all the time!
Explanation:
Hope this helps!
Most consumers first spend their disposable income on what
Answer:
They first spend it on necessities.
this is a test a b c d e f g h i j k l m n o p
Answer:
???????????????????????????????????????
Explanation:
Answer:
q r s t u v w x y z
Explanation:
Can some one help me with this question its hard :( down below ill give brainliest
Which statement should she place in the region marked X?
A. Electrons move between objects.
B. The objects do not touch.
C. The objects develop opposite charges.
D. The objects have the same charge.
Electrons moving between objects should be place in the region marked X. So, option A.
What is meant by charge ?When a substance is exposed to an electric or magnetic field, it has a characteristic known as charge that makes it experience a force. Neither a positive nor a negative charge exists.
Here,
Normally, electrons are organized into specific shells that maintain a constant distance from the atom's nucleus.
Two electrons can fit inside of the shell that is closest to the nucleus. Up to eight can fit inside the following shell. The number of electron shells in some atoms with numerous protons can reach seven.
A powerful force of attraction exists between the protons and the electrons in the shells that are closest to the nucleus.
In the outermost shells of certain atoms, the protons are sometimes attracted to the electrons with little force.
One can force these electrons out of their orbits. They may switch from one atom to another by applying a force. Electricity is produced by the changing electrons.
Hence,
Electrons moving between objects should be place in the region marked X. So, option A.
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A spring has 100 J of EPE when it is stretched 2 m. What is the spring constant?
A. 100 N/m
B. 50 N/m
C. 200 N/m
D. 150 N/m
Answer:
B: 50 N/m
Explanation:
Hopes it help.
The spring constant of the spring is 50 N/m. The correct option is B.
What is spring potential energy?When the spring is compressed, it gets compressed up to its elastic limit. When load is removed from the spring, it regains its shape and obtains equilibrium position. The energy stored in this process is called as spring potential energy.
Given a spring has 100 J of EPE when it is stretched 2 m. The energy stored in the spring is given by
SPE = ½ kx²
100 = ½ k (2 m)²
k = 50 N/m
So, spring constant of the spring is 50 N/m.
Thus, the correct option is B.
Learn more about spring potential energy.
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Model A: Two sponge balls representing two atoms are soaked in water. You hold one ball, and your friend holds the other. Then you press the two balls together. As you press them together, water leaks out. What type of reaction does this model represent?
:) thnx, please don't just answer for points
Answer:
The type of reaction represented by the model is an;
Exothermic reaction
Explanation:
Exothermic reaction reaction is a reaction that involves the giving off of excess energy as heat and or light by two or more reactants during a chemical reaction due to the higher combined energy of the reactants compared with the product
The analogy are;
The sponge balls are the reacting atoms
The water is the energy which they contain
The water given off is the excess energy which the compound formed by putting together the two soaked sponge balls is unable to hold.
State one similarity between rotatory and circular motion
Answer:
The main difference between these types of motion is that circular motion is a special case of rotational motion, where the distance between the body’s centre of mass and the axis of rotation remains fixed.
Rotational motion is based around the idea of rotation of a body about its center of mass. In rotational motion, the axis of rotation and centre of mass could change whereas in circular motion, the axis of rotation and centre of mass does not change.
Circular motion is a movement of an object along the circumference of a circle or rotation along a circular path and can either have a constant angular rotation rate and constant speed, or it can exist with a changing rate of rotation.
Think of one of those fairground rides where people sit on dummy horses. Now imagine the horses spin around the post that holds them to the base of the ride. Then you have both rotational motion of the horse and circular motion as the horses move around the ride.