Answer:
B. Measuring how much energy light loses while it travels.
Explanation:
Got it right on edge.
Answer:
B
Explanation:
measuring how much energy light loses while it travels
Why do bulbs in series circuit glow brightly than those in the parallel circuit?
In series, both bulbs have the same current flowing through them. The bulb with the higher resistance will have a greater voltage drop across it and therefore have a higher power dissipation and brightness. In parallel, both bulbs have the same voltage across them.
Jacob works in a store that sells jeans. Jacob is stacking a new delivery of jeans to display on top of the old jeans so that they are touching. In Stack 1, the top pair of jeans is larger than the bottom pair. In Stack 2, both pairs of jeans are the same size as the bottom pair in Stack 1. What does the different amount of energy mean for the temperature of all four pairs of jeans, and how will the two top pairs of jeans compare in temperature after a while? Why?
jacob first stack is 1
Answer:
help
Explanation:
me
2. A train is traveling at 75 km/hour. How far can it travel in 20 hours?
3355400 Miles I highly doubt this though sorry
An atom of an element loses one proton and one electron. Which statement describes the result of this event?
A positive ion of the same element is formed.
B.neutral atom of the element's isotope is formed.
C.positive ion of a new element is formed.
D.neutral atom of a new element is formed.
Answer:
A.
Explanation:
hope it help,tnx sa points
What is displacement?
Displacement means when you move something from its original position. Let's say you want to sit on a chair. You move the chair from where it was originally placed. That's displacement.
A 6.8 KG object moves with a velocity of 8 M/S what’s it's kinetic energy?
Answer:
Explanation:
KE = ½mv² = ½(6.8)8² = 217.6 J
round as appropriate because that result is way too much precision for the inputs provided. Arguably should be 200 J based on the single significant digit of the velocity.
Which of the following actions will keep the gravitational force between two objects unchanged?
Decreasing the mass of the objects
Increasing the temperature of the objects
Increasing the distance between the objects
Decreasing the distance between the objects
Answer:
increasing the temperature of the object
A skydiver dives from an airplane. The amount of air resistance she is met with is
measured at each second following her jump.
The terminal velocity of the skydiver is when the weight of the skydiver equals its air resistance therefore, the terminal velocity of the skydiver would occur at the 4th second. Therefore, option (D) is correct.
What is terminal velocity?Terminal velocity can be described as the maximum velocity acquire by an object as it falls through a fluid. It happens when the sum of the drag force and the buoyancy is equal to the downward gravity acting.
Since the net force on the object is equal to zero, the object has zero acceleration. The object would attain the terminal velocity and start to move with a steady velocity.
An object is moving with terminal velocity if its speed is constant because of the restraining force exerted by the air or fluid through which it is moving.
At the 4th second, the weight of the skydiver is 500 N and the air resistance is equal to 500N. Therefore, the air resistance will be equal to the skydiver's weight. At this point, the forces will be balanced and the terminal speed will be attained.
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How can you determine the number of protons or electrons in an atom?
Answer:
number of protons = atomic number
number of electrons = atomic number
Please help as quick as possible
Answer:
Explanation:
Left to right
40 knots
5 knots
calm
50 knots
15 knots
Calculate the density of a marble at 16 g and has a volume of 8cm 3
Answer:
16g/8cm3 = 2g/cm3 or 2x106g/m3
Explanation:
Hope it helps
Please Give me Brainliest
Answer:
16g/8cm3 = 2g/cm3 or 2x106g/m3
Give some practical examples where prefixes are used
A student drops a rock from rest at a distance h above the ground such that the rock hits the ground at a time t0 . At what distance above the ground should the rock be dropped such that it hits the ground at a time 2t0 after it is released.?
The distance above the ground the rock should be raised in order to hits the ground double of initial time is 4h.
The given parameters;
initial velocity of the rock, u = 0height above the ground, = htime of motion of the rock from the height = t₀The time of motion of the rock from the given height is calculated as;
[tex]h = ut + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt_0^2\\\\h = \frac{1}{2} gt_0^2\\\\t_0^2 = \frac{2h}{g} \\\\t_0 = \sqrt{\frac{2h}{g} }[/tex]
When the time of motion is doubled to 2t₀, the height above the ground should be;
[tex]2(t_0) = 2(\sqrt{\frac{2h}{g} } )\\\\2(t_0) = \sqrt{\frac{4\times 2h}{g} }[/tex]
Thus, the distance above the ground the rock should be raised in order to hits the ground double of initial time is 4h.
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25. Spider-Man Spider-Man holds the bottom of an elevator with one hand.
With his other hand, he holds a spider cord attached to a 50-kg box of
explosives at the bottom of the cord. Determine the force that the cord
exerts on the box if (a) the elevator is at rest; (b) the elevator accelerates up
at 2.0 m/s2; (c) the upward-moving elevator's speed decreases at a rate of
2.0 m/s2; and (d) the elevator falls freely.
Answer:
Explanation:
a) F = m(g + a) = 50(10 + 0.0) = 500 N
b) F = m(g + a) = 50(10 + 2.0) = 600 N
c) F = m(g + a) = 50(10 - 2.0) = 400 N
d) F = m(g + a) = 50(0.0 + 0.0) = 0.00 N
Brainilist If you solve these correctly!
20 points!!!
Answer:
To convert from denary to binary, start by subtracting the biggest place value you can from the denary number, then place a 1 in that place value column. Next, subtract the second biggest place value you can, and place a 1 in the column. Repeat this process until you reach zero.
thermometer is preferred fir very cold region give reason
Answer:
alcohol thermometer is preferred for a very cold region. Alcohol thermometer is preferred for a very cold region because its freezing point of alcohol is - 117°C. So, it can measure the temperature of the very cold region.
Someone says, “The sun seems brighter because it is bigger than other stars.” What would you say?
Answer:The sun is not a particularly large star. It appears brighter because it is only 93 to 95 million miles away or about 8 light minutes. Whereas the next closest star is 4.5 light years away.
Explanation: does this need an explanation? no, exactly.
What is the slope of the line plotted below?
O A. -1
O B. 2
o
C. 2.
O D. 1
Answer:
-2
Explanation:
The points are (0, 3) and (3, -3)
If you subtract 3-(-3) you get 6
If you subtract 0-3 you get -3
6/-3 is equal to -2
A product of photosynthesis which is a reactant in cellular respiration?
NADPH
Water
Carbohydrate
Answer:
A
Explanation:
water released then sunlight splits it into oxygen and hydrogen ions
Identify the energy transformations for a gas fire
Answer:
The release of energy from fuels is used to make other forms of energy. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat. The heat is converted into mechanical energy. The mechanical energy moves the car.
what is so2..........
Answer:
so2 is Sulfur dioxide.
if we assume that between birth and 2.5 y of age a child uses 3 diapers per day estimate total number of disposable diapers used per year in the us
Answer:4.38 X 10^10 diapers.
Explanation:
[3 diapers / 1day] X [365 day / year] X 1 year X 40million (rough guess of 1-2.5 year olds) = 4.38 X 10^10 diapers.
if we assume that between birth and 2.5 y of age a child uses 3 diapers per day then the total number of disposable diapers used per year in us would be 1095 diapers
What is multiplication?Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis.
as given in the problem if we assume that between birth and 2.5 y of age a child uses 3 diapers per day
The number of diapers used in a day = 3
as there are 365 days in a year
The total number of diapers used in a year = 3×365
The total number of diapers used in a year = 1095 diapers
Thus, The total number of disposable diapers used in the United States each year would be 1095 diapers if we assume that a child uses 3 diapers per day between birth and 2.5 years of age.
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how is the shape of an object related to Bernoulli principle
Answer:
Again, in accordance with Bernoulli's principle, the shape of the airflow facilitates the spread of laminar flow around it. The slower-moving currents beneath the airfoil exert greater pressure than the faster currents above it, giving lift to the aircraft.
Explanation:
a box is resting on the floor
Answer:
so what is the question ???
Answer:
huhhhhhhhhj hhhhhh
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You start your bicycle ride at the top of a hill moving East. You coast down the hill at a
constant acceleration of 2 m/s^2. When you get to the bottom of the hill you are moving
18 m/s, and from there you pedal to maintain that velocity for one minute.
a) Draw the velocity vector and why you drew it that way.
b) Draw the acceleration vector and why you drew it that way.
c) How far will you have gone in total from the time you left the hilltop?
What is the givens part 1&2, original formula 1&2 reworked formula(if needed) 1&2
Answer:
a.
Explanation:
draw it that way velocity draw
hope it's helpful
A block having a mass of m = 19.5 kg is suspended via two cables as shown in the figure. The angles shown in the figure are as follows: α = 17° and β = 27°. find the numeric value of the T1 and T2 in new ton?
The equilibrium condition allows finding the result for the tensions of the cables that support the block are:
T₁ = 245.1 N and T₂ = 263.1 N
Newton's second law establishes a relationship between the net force, the mass and the acceleration of the bodies, in the special case that the acceleration is zero is called the equilibrium condition.
∑ F = 0
Where F is the force.
A free body diagram is a diagram of the forces without the details of the bodies, in the attachment we can see a free body diagram of the system.
Let's write the equilibrium condition for each axis.
x-axis
T₂ₓ - T₁ₓ = 0
T₂ₓ = T₁ₓ
y-axis
[tex]T_{1y} + T_{2y} - W =0[/tex]
We use trigonometry to find the components of stress.
cos 17 = [tex]\frac{T_{1x}}{T_1}[/tex]
sin17 = [tex]\frac{T_{1y}}{T_1y}[/tex]
T₁ₓ = T₁ cos 17
[tex]T_1_y[/tex] = T₁ sin 17
cos 27 = [tex]\frac{T_2_x}{T_2}[/tex]
sin27 = [tex]\frac{T_2_y}{T_2}[/tex]
T₂ₓ = T₂ cos 27
[tex]T_{2y}[/tex] = T₂ sin 27
We substitute.
T₂ cos 27 = T₁ cos 17
T₂ sin27 + T₁ sin17 = W
We solve the system.
[tex]T_1 \frac{cos 17 \ sin 27}{cos 27} + T_1 sin 17 = m g \\T_1 ( tan 27 cos 17 + sin 17) = 19.5 \ 9.8[/tex]
T₁ (0.7796) = 191.1
T₁ = 245.1 N
We look for the T₂ tension.
T₂ = [tex]T_1 \ \frac{cos 17 }{cos 27}[/tex]
T₂ = 245.1 [tex]\frac{cos 17}{ cos 27}[/tex]
T₂ = 263.1 N
In conclusion, using the equilibrium condition we can find the result for the tensions of the cables that the block supports are:
T₁ = 245.1 N and T₁ = 263.1 N
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5) You are visiting Norway for the winter and driving on a highway where the speed
limit is 80 km/hr. Your car indicates that you are going at a speed of 55 mi/hr. Will
you be arrested? (1 mi = 1.6 km)
A ball rolls horizontally off an incline, at velocity of 8.00m/s l. If the incline is 3.50m above the ground below determine:
a) how long is the projectile in the air?
B) what is the range of the projectile?
C) what is the x-component of velocity at t= 0. 21s
d) y- component of velocity at t-0.21s
e) what is net velocity at t= 0.21s
Answer:
sadsadasadsdassda
Đồ thị hình vẽ biểu diễn sự biến thiên tốc độ của một vật chuyển động thẳng theo thời gian, biết góc = 300. Nếu khối lượng của vật là 20 kg thì hợp lực tác dụng vào vật có độ lớn là bao nhiêu ?
Cho e xin câu trả lời được không ạ?
A 200 kg object is pulled up a rough incline plane as shown in the picture above. The object accelerates at 1 m/s^2. Calculate the tension on the rope.
A. 1,136 N
B. 2,203 N
C. 712 N
D. 957 N
Answer:
Explanation:
μ = 0.05 is hardly a "rough surface", More like very slick ice. But OK
Forces acting parallel to the ramp with UP RAMP being positive direction.
F = ma
Tension minus weight minus friction will equal mass acceleration
T - mgsinθ - μmgcosθ = ma
T = m(a + g(sinθ + μcosθ))
T = 200(1 + 9.8(sin25 + 0.05cos25))
T = 1,117.14995
Which is closest to answer A.
Understand that answer precision to 3 or 4 significant digits as exampled by our solution options CANNOT be justified by input numbers with only a single significant digit as in this question.
In fact, we cannot get the 1136 N result unless we also use gravity to a single significant digit of 10 m/s²