Answer:
954.88kg
Explanation:
F=ma
Given that,
F = 4106N
and a = 4.3m/s²
By rearranging the equation,
m = F÷a
m = 4106 ÷ 4.3
m = 954.88kg
An aluminum rod is 300m and at 25 degree Celsius. Calculate the change in rod
length at 45 degree Celsius
Answer:
Explanation:
540
GIVING BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 23pts-
Answer:
B is the answer!!
Explanation:
which best illustrates the relationships between a producer and a consumer
Ways that waves may interact with matter include
Answer:
Three ways that waves may interact with matter are reflection, refraction, and diffraction. Reflection occurs when waves bounce back from a surface that they cannot pass through.
Use the image to answer Questions 4–6.
What takes place at Point A?
conduction
convection
radiation
sublimation
What takes place at Point B?
conduction
convection
radiation
sublimation
Image attached
Answer:
the first one is c and the second is b
When electrons are moving it is called
A field
B electricity
C friction
D attraction
plzz help mee
What do you notice about how we write out the symbols for the different elements?
Many of the symbols are the first one or two letters of the element’s name in English. The first letter of a symbol is always written as a capital letter (uppercase) and the second letter as a small letter (lowercase).
For example
(i) hydrogen, H
(ii) aluminium, Al and not AL
(iii) cobalt, Co and not CO.
Symbols of some elements are formed from the first letter of the name and a letter, appearing later in the name.
Examples are: (i)chlorine, Cl, (ii) zinc, Zn etc.
Other symbols have been taken from the
names of elements in Latin, German or Greek.
For example, the symbol of iron is Fe from its Latin name ferrum, sodium is Na from natrium, potassium is K from kalium. Therefore, each element has a name and a unique chemical symbol.
An object is located 20.0 cm from a convex lens. The lens focuses light at a
distance of 10.0 cm. What is the image distance?
A. 6.67 cm
B. -6.67 cm
C. -20.0 cm
D. 20.0 cm
The Answer Is : D. 20.0 cm
My Reason : These types of problems can all be solved using the lens or mirror equation.
1/20 +1/q= 1/10
q=20 cm
The image is formed behind the lens at 2f or the center of curvature.
It is real, inverted, and the same size as the object
The Answer Is: D. 20.0 cm
Explanation: I did the test :)
Which of the following is the best example of motion?
A. Waving your arms
B. Tossing and turning in your bed
C. Walking from home to school
D. Your dog wagging his tail
Answer:
Maybe A. waving your arms?
A globe (model of the Earth) is a hollow sphere with a radius of 16 cm. By wrapping a cord around the equator of a globe and pulling on it, a person exerts a torque on the globe of 120 N • m for 1.2 s. What angular momentum does the globe have after 1.2 s?
Answer:
144 kg m^2/s
Explanation:
Two students noted that the acceleration of a car was - 40 km/s^2. The first student said, “That can’t be right. You can’t have a negative acceleration.” The second student said, “That can’t be right. You can’t have s^2.” What would you say to each student to help them better understand how acceleration is described? pls answer
When two chemical atoms form a chemical bond, the expected result is that the electrons
A.)will be in the excited state
B.) will be equal to the number of protons
C.) will complete a noble gas configuration in both atoms
D.) will be removed completely from both atoms
Answer:
B
Explanation:
atoms with equal or similar electronegativity form covalent bonds in which the valence electrons are shared between the two atom
During the formation of a chemical bond, the expected result is that the electrons will complete a noble gas configuration in both atoms. Hence, option (C) is correct.
The given problem is based on the concepts and fundamentals of chemical bonds. The chemical bonds between the two atomic species is formed by sharing the electrons.
When the electrons from each of the atom is shared, they maintain a strong intermolecular bond, which is known as chemical bond. This chemical bond allows the element to achieve noble gas configuration.The electrons that is shared within the two atomic species are known as shared pairs.The shared pairs are bonded within the atomic species by means of Van der Waals force of attraction as as covalent interaction..Thus, we can conclude that during the formation of a chemical bond, the expected result is that the electrons will complete a noble gas configuration in both atoms. Hence, option (C) is correct.
Learn more about the chemical bonds here:
https://brainly.com/question/23882847
What will be the final velocity of a rock if we drop it off of a bridge and it strikes the ground 2.8s later (ignoring air resistance)?
A rock has a density of 2 g/mL and a mass of 17.5 g. What is the volume of the rock?
HELP PLEASE
Bob and Sarah build an electromagnet by wrapping a wire around a nail and connecting the wire to both terminals of a battery. When they test the electromagnet, it can pick up six paper clips. Their teacher wants all groups to pick up at least 10 paper clips. What revisions could Bob and Sarah make to increase the number of paper clips their electromagnet picks up
1). Wrap more turns of the wire around the nail.
2). Increase the electrical current through the wire. (Do this by inserting another battery in the circuit, in series with the first one.)
State two advantages of thermal expansion
Higher Power Efficiency and Eliminates Risk of Compressor Breakdown
1.Wave motion that is parallel to the wave direction is described
as_____________ wave.
2. The time to make one complete cycle is _____________.
3. The distance between successive crests of a wave is __________.
4. Wave motion that is perpendicular to wave direction describes a
_____________ wave.
5. The number of waves that passes a given point in time is__________.
6. ____________ is a kind of wave that does not need a medium.
7. The highest point of a wave is called ___________.
8. The unit for frequency is ____________.
9. The part of a longitudinal wave where there are fewer particles is
called______________.
10. A region in a medium of longitudinal wave where molecules are
packed is called _____________.
Answer:
Explanation:
A wave is a phenomenon that travels through a material medium without any permanent effect on the medium. It can be classified as mechanical or electromagnetic waves. And the two major types are transverse and longitudinal.
From the given question;
1. Longitudinal waves e.g sound waves, waves in a spring'
2. Frequency (number of cycles per second).
3. Wavelength of the wave. Measured in meters.
4. Transverse waves e.g light waves, water waves.
5. Wave speed.
6. Electromagnetic waves e.g ultraviolet waves, X-rays etc.
7. Amplitude.
8. Hertz.
9. Rarefaction
10. Compression
A wave is a phenomena that flows across a material medium without leaving any lasting mark.
1.Wave motion that is parallel to the wave direction is described
as longitudinal wave.
What is wave?A wave is a phenomena that flows across a material medium without leaving any lasting mark. Mechanical or electromagnetic waves can be used to classify it. Transverse and longitudinal are the two main forms.
1.Wave motion that is parallel to the wave direction is described
as longitudinal wave.
2.Frequency is defined as the number of cycles per second.. The time to make one complete cycle is frequency.
3.Wavelength of the wave is measured in meters.The distance between successive crests of a wave is wavelength.
4. Examples of Transverse waves are light waves, water waves.. Wave motion that is perpendicular to wave direction describes transverse wave.
5.The number of waves that passes a given point in time is Wave speed.
6.Examples of Electromagnetic waves are ultraviolet waves, X-rays etc.
Electroimegnetic wave is a kind of wave that does not need a medium.
7.The highest point of a wave is called amplitude.
8.The unit for frequency is Hertz.
9. A region in a medium of longitudinal wave where molecules are Rarefaction.
10. A region in a medium of longitudinal wave where molecules are
packed is called compression.
To learn more about the wave refer to the link;
https://brainly.com/question/3004869
will give you brainliest pls help
1. All the relevant resistors are in series, so the total (or equivalent) resistance is the sum of the resistances of the resistors: 20 Ω + 80 Ω + 50 Ω = 150 Ω [choice A].
2. The ammeter will read the current flowing through this circuit. We can find the ammeter reading using Ohm's law in terms of the electromotive force provided by the battery: I = ℰ/R = (30 V)(150 Ω) = 0.20 A [choice C].
3. The voltmeter will measure the potential drop across the 50 Ω resistor, i.e., the voltage at that resistor. We know from question 2 that the current flowing through the resistor is 0.20 A. So, from Ohm's law, V = IR = (0.20 A)(50 Ω) = 10. V, which will be the voltmeter reading [choice F].
4. Trick question? If the circuit becomes open, then no current will flow. Moreover, even if the voltmeter were kept as element of the circuit, voltmeters generally have a very high resistance (an ideal voltmeter has infinite resistance), so the current moving through the circuit will be negligible if not nil. In any case, the ammeter reading would be 0 A [choice B].
In the early universe and now, stars most likely formed from which of the following?
Group of answer choices
Nebulas
Planets
Comets
Asteroids
Answer:
Nebulas
Explanation:
Nebulae are made of dust and gases—mostly hydrogen and helium. ... Eventually, the clump of dust and gas gets so big that it collapses from its own gravity. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.
Figure 3.50 shows a wooden cube floating in water.
When a stone is placed on the wood, it sinks a further 0.2m.
Find the weight of the
(a) wood
(b) stone
(Density of water = 1000kgm^-3]
Answer:
(a) The weight of the wood is approximately 5,886 N
(b) The weight of the stone is approximately 1,962 N
Explanation:
The given parameters are;
The base area of the wood, A = 1 m × 1 m = 1 m²
The depth to which the wood is submerged below the water, d = 0.6 m
The depth further the wood sinks when a stone is placed on the wood, Δd = 0.2 m
The density of water, ρ = 1,000 kg/m³
(a) Archimedes' principle states that the up-thrust, or upward force acting on an object submerged in a fluid, is equal to the weight of the displaced fluid.
For a floating object such as the wood, the up-thrust is equal to the weight of the object
The weight of the water displaced, W = The volume of the displaced water, V × The density of the water, ρ × The acceleration due to gravity, g
W = V × ρ × g
'V' is the same as the volume of the submerged wood, therefore;
V = A × d = 1 m × 1 m × 0.6 m = 0.6 m³
g ≈ 9.81 m/s²
Therefore;
W = 0.6 m³ × 1,000 kg/m³ × 9.81 m/s² ≈ 5,886 Newtons
The weight of the water displaced, W ≈ 5,886 N = The up-thrust = The weight of the wood
∴ The weight of the wood, W ≈ 5,886 N
(b) Similarly, the weight of the stone, [tex]W_{stone}[/tex] is equal to the weight of the additional volume of water displaced
∴ [tex]W_{stone}[/tex] = A × Δd × ρ × g
By plugging in the values, we get
[tex]W_{stone}[/tex] ≈ 1 m² × 0.2 m × 1,000 kg/m³ × 9.81 m/s² = 1,962 N
The weight of the stone, [tex]W_{stone}[/tex] ≈ 1,962 Newtons
1. Rearrange the equation for the area of a rectangle (A = l w) to solve for length, l.
Step 1
Step 2
Step 3
Step 4
2. Rearrange the equation for velocity v = d/t to solve for time, t.
Step 1
Step 2
Step 3
Step 4
When 525 J of heat is added to 7.6 g of metal at 26°C, the temperature increases to 80°C. What is the specific heat of the metal?
Ans the answer is 0.25J
Explanation
i guess
What must happen to light in order for an image to form
In space, there is no friction. Without the force of friction, satellites and other moving objects will continue moving at the same speed unless they are acted on by other forces.
Which of Newton’s laws of motion best matches this example?
Answer:
Newton's first law
Explanation:
it says that an object will continue to be at rest or keep moving till any external for is applied to it to make it move or stop respectively.
A car increases from 15 km/s to 45 km/s in 5 seconds. Calculate the average acceleration of the car during these 5 seconds. (2 points) A. 6 km/s2 B. 12 km/s2 C. 30 km/s2 D. 60 km/s2
When light passes from air into water at an angle of 60° from the normal, what is the angle of refraction? (40.6°)
Answer:
40.6°
Explanation:
The angle of refraction, when light passes from air into water at an angle of 60° from the normal, is 40.6°
What is Snell's law?It states that the ratio of sine of angle of incidence and angle of refraction is equal to the refractive index of second medium to the first medium.
sini/sinr =n₂ / n₁
Given, the light passes from air into water at an angle of 60° from the normal, the angle of incidence i = 60°, refractive index of air n₁ =1, refractive index of water n₂ = 1.333, then the angle of refraction is
sinr = sini x (n₁/n₂)
Plug the values, we get
sinr = sin60 x (1/1.333)
sinr = 40.6°
The angle of refraction is less than angle of incidence due to refraction.
Thus, the angle of refraction is 40.6°
Learn more about Snell's law.
https://brainly.com/question/10112549
#SPJ2
factors that affect pressure in liquids
Answer:
Depth and density of the liquid determine the amount of pressure in a liquid.
Explanation:
Derived and define the units
A man's higher initial acceleration means that a man can outrun a horse over a very short race. A simple - but plausible - model for a sprint by a man and a horse uses the following assumptions: The man accelerates at 6.0 m/s2for 1.8 s and then runs at a constant speed. A horse accelerates at a more modest 5.0 m/s2 but continues accelerating for 4.8 s and then continues at a constant speed. A man and a horse are competing in a 200 m race. The man is given a 100 m head start, so he begins 100 mfrom the finish line.
How much time does it take the man to finish the race? The horse? Who wins?
Answer:
t_man = 10.16 s, t_horse = 10.73 s, the winner is the man
Explanation:
To solve this problem we are going to find the time of each one separately.
Man we look for distance and time during acceleration
x₁ = v₀ t₁ + ½ a₁ t₁²
as it comes out of rest its initial velocity is zero
x₁ = ½ a₁ t₁²
x₁ = ½ 6.0 1.8²
x₁ = 9.72 m
at this point its speed is
v₁ = v₀ + a t
v₁ = 0 + 6 1.8
v₁ = 10.8 m / s
From here on it continues at constant speed, the distance that the man needs to travel from the point where the man leaves at 100m is
x₂ = 100 - x₁
x₂ = 100- 9.72
x₂ = 90.28 m
the time for this part is
v₁ = x₂ / t₂
t₂ = x₂ / v₂
t₂ = 90.28 / 10.8
t₂ = 8.36 s
the total time for the man is
t_man = t₁ + t₂
t _man = 1.8 + 8.36
t_man = 10.16 s
We repeat the calculation for the horse
distance traveled during the acceleration period
x₃ = v₀ t + ½ a₂ t₃²
as part of rest its initial velocity is zero
x₃ = ½ a₂ t₃²
x₃ = ½ 5.0 4.8²
x₃ = 57.6 m
the velocity at this point is
v₃ = v₀ + a₂ t₃
v₃ = 0 + 5 4.8
v₃ = 24 m / s
the rest of the route is at constant speed, the remaining distance
x₄ = 200 - x₃
x₄ = 200 - 57.6
x₄ = 142.4 m
the time to go through it is
t₄ = x₄ / v₃
t₄ = 142.4 / 24
t₄ = 5.93 s
the total time for the horse is
t_horse = t₃ + t₄
t_horse = 4.8 + 5.93
t_horse = 10.73 s
when we compare the times we see that the man arrives a little before the horse, the winner is the man
(b) The refractive index of the glass of the prism is 1.49. The ray EF is refracted at F. Use
information from Fig. 6.1 to calculate the angle of refraction at F.
IL
angle of refraction
[3]
see in link below. ok bye my friend