Less than R, less than 2R, less than 3R, and less than any other possible hookup of any one, any two, or all three of these resistors.
Explain what happens to the path of light as it hits a piece of black paper, a glass mirror, and a glass
of water. Explain why the light behaves the way it does as it hits each object.
1. Light is _________ by the black paper.
2. Light is _________ by the mirror.
3. Light is _________ by the glass of water.
Which of Newton's laws
describes why an elephant
has a large amount of inertia?
A. Newton's 1st Law
B. Newton's 2nd Law
C. Newton's 3rd Law
Answer:
Newton's 2nd law think soo
As amplitude of a wave increases, the
_____ of the wave also increases.
frequency
wave speed
wavelength
energy
i think so it is frequency
1:
This diagram shows four different dishes on the kitchen shelf.
tea cup
IN
2:
bowl
50 N
mug
10 N
plate
SON
3:
999
4
:
Which of these dishes has the least potential energy?
bowl
5:
plate
mug
6:
tea cup
Answer:
Bowl will have maximum potential energy
Explanation:
It is the bowl that will have maximum potential energy.
It is because potential energy is high when both height and mass of the object is high.
Here in this case the bowl has maximum weight with maximum height except the tea cup but the potential weight of cup will not make much impact as its weight is very low.
A small car is traveling at a speed of 60 mph on the highway. In the next lane, a large passenger bus is traveling at the same speed.
Answer:
A. The bus has more kinetic energy than the car.
Explanation:
As we know that
Kinetic energy is the amount of energy possessed by the body at the time when it is in motion.
Also,
Kinetic energy = 1 ÷ 2mv²
Here m denotes the mass of the body
and v denotes the velocity of the body.
So it would be based on the mass & velocity of the body
As if the passenger bus contains more kinetic energy as compared to the car because of the big mass
Hence, the first option is correct
In one cycle of any heat engine
A. the net work done is larger than the heat exhausted.
B. more heat flows from the engine than enters the engine.
C. The internal energy of the engine does not change.
D. the net heat flow is zero.
A 2.60 kg lion runs at a speed of 5.00 m/s until he sees his prey. The lion then speeds up 8.00 m/s to catch it. How much work did do after he speeds up?
Answer: 50.7 J
Explanation:
Given
mass of lion is [tex]m=2.6\ kg[/tex]
The initial speed of the lion is [tex]v_1=5\ m/s[/tex]
increased speed of lion is [tex]v_2=8\ m/s[/tex]
Initially, its kinetic energy is [tex]K_1=\frac{1}{2}mv_1^2[/tex]
Final kinetic energy [tex]k_2=\frac{1}{2}mv_2^2[/tex]
work did by lion after speed up is [tex]k_2-k_1[/tex]
[tex]\Rightarrow W=\dfrac{1}{2}\times 2.6[8^2-5^2]\\\\\Rightarrow W=1.3\times [39]=50.7\ J[/tex]
equivalent resistance:
What is the equivalent resistance between points P & Q?
(None of the resistors are the same and the wires are without resistors.)
Answer:
equivalent register what is the equivalent resistance between points P and Q no knows registers are the same and the virus faila
The statement "if I raise the temperature of
a cup of water, then an increased amount of
sugar will be dissolved" is an example of
A. an observation
B. a hypothesis.
C. a theory
I need help please!!!!!!!!!!!
Answer:
correct answer is rapid city
17
If 225 grams of water is to be heated from 25.0°C to 100.0°C to make a cu
tea, how much heat must be added? The specific heat of water is 4.18 J/g.
(5 Points)
63536)
70538)
117562)
705)
Answer:
Heat energy required (Q) = 70,537.5 J
Explanation:
Given:
Mass of water (m) = 225 grams
Initial temperature of water = 25.0°C
Final temperature of water = 100.0°C
Specific heat of water (c) = 4.18 J/g
Find:
Heat energy required (Q)
Computation:
Change in temperature Δt = Final temperature of water - Initial temperature of water
Change in temperature Δt = 100 - 25
Change in temperature Δt = 75°C
Using Heat energy formula
Q = (m)(c)(Δt)
Heat energy required (Q) = (225)(4.18)(75)
Heat energy required (Q) = 70,537.5 J
A washer is swung in a circle on a string as shown below. If the string
breaks which arrow shows the path the washer will take? *
Answer:
yabarrow
Explanation:
i think thats the name
what is the main cause of the seasons
*please help fast**15 points*
How is laser light different from the light produced by a flashlight?
A. The crests of laser light waves align with one another.
B. Lasers produce multiple wavelengths of light.
C. Lasers produce light that is incoherent
D. Flashlights use reflecting mirrors and lasers do not.
Answer:
B.
Explanation:
Laser light is different from normal light in other ways as well. First, its light contains only one wavelength (one specific color). ... Whereas a laser generates a very tight beam, a flashlight produces light that is diffuse. Because laser light is coherent, it stays focused for vast distances, even to the moon and back
Consider the two-slit interference experiment. Electromagnetic radiation passes through the two slits that are a distance 0.0287 mm apart. The path to the fourth-order bright fringe on the nearby screen forms an angle with the horizontal. What is the wavelength of the light?
409 nm
164 nm
570 nm
655 nm
Explanation:
Consider the two-slit Interference experiment. Electromagnetic radiation passes through the two slits that are a distance 0.0287 mm apart. The path to the fourth-order bright fringe on the nearby screen forms an angle with the horizontal. What is the wavelength of the light? (1 point) O 655 nm O 570 nm O 164 nm O 409 nm
COMPANY
what Sport is similar to Ulama
A boy weighs 50 kg and is running with 225 J of energy, what is his velocity?
I will mark you brainlist!!
How is primary succession different from secondary succession? Give an example of an event that may lead to primary succession.
Answer:
Primary Succession is defined as the type of ecological succession, which occurs or start from the barren, uninhabited and unoccupied areas, such as the newly formed pond, rock, dunes, etc., while such kind of succession, which occurs in the area where there was the existence of life previously but got abandoned due to natural disturbances like deforestation, natural calamities (flood, earthquake, tsunami), the field with no vegetation is known as Secondary Succession
Explanation:
Some examples of primary succession include the formation of a new ecosystem after a volcano, glacier outbursts, or a nuclear explosion. Some examples of secondary succession include succession after fire, harvesting, logging, or abandonment of land or the renewal after a disease outbreak
i hope this answer helps :)
What does the transfer of energy have to do with natural disasters?
Answer: When an earthquake occurs energy is transferred, from where the rocks break, and travels throughout the world. The bigger the quake the further from the epicentre the waves will travel. There are four types of earthquake wave generated during an earth quake
Explanation:
The intensity of a natural disaster can be determined by the amount of energy transferred due to it.
What is meant by natural disaster ?Natural disasters include calamities with atmospheric, geological, and hydrological causes (such as droughts, earthquakes, floods, hurricanes, and landslides), which can result in fatalities, property damage, and social and environmental disturbance.
Here,
Internal and external forces work together to create natural disasters. The first is internal forces that are caused by the earth's internal heat energy and result in geologic hazards including earthquakes, volcanoes, and tsunamis.
Energy is transferred during an earthquake and propagates throughout the globe from the point at which the rocks split. The waves' distance from the epicenter increases with the size of the earthquake.
During an earthquake, four different kinds of seismic waves are produced. They transfer energy out of the earthquake's epicentre.
Hence,
The intensity of a natural disaster can be determined by the amount of energy transferred due to it.
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A constant applied force Fp of 11.0 N pushes a box with a mass=7 kg a distance x=15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is .110. Assuming the box starts from the rest, what is the final velocity vf of the box at 15.0 m point? If there were no friction between the box and the floor, what applied force Fnew would give the box the same final velocity?
We have that for the Question " constant applied force Fp of 11.0 N pushes a box with a mass=7 kg a distance x=15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is .110." it can be said that
the final velocity vf is
[tex]vf=3.83m/s[/tex]
and the applied force Fnew is
[tex]F_{new}=3.43N[/tex]
From the question we are told
A constant applied force Fp of 11.0 N pushes a box with a mass=7 kg a distance x=15.0 m across a level floor. The coefficient of kinetic friction between the box and the floor is .110. Assuming the box starts from the rest, what is the final velocity vf of the box at 15.0 m point? If there were no friction between the box and the floor, what applied force F new would give the box the same final velocity?
Generally the equation for the Force is mathematically given as
F_p-\mu mg=ma
Therefore
11-0.110*7*9.8=7*a
a=0.49m/s^2
Using Newtons equation
v^2=u^2+2as
v^2=0+2*0.49*15
v=3.83m/s
Therefore
F=ma
F=0.49*7
F_{new}=3.43N
Therefore
the final velocity vf is
[tex]vf=3.83m/s[/tex]
and the applied force Fnew is
[tex]F_{new}=3.43N[/tex]
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A car starts from rest and goes down a slope with a constant
acceleration of 5 m/s2
. After 5 s the car reaches the bottom of the hill. Its
speed at the bottom of the hill, in meters per second, is:
Answer:
25m/s
Explanation:
here we use 1st equation of motion
then we find this ans
According to Newton’s second law of motion, weight depends on an object’s mass and the net force acting on the object. True or false
Answer:
true..
Explanation:
Newton's 2nd law of motion is greater the mass of an object the more force it will take to accelerate the object
According to Newton’s second law of motion, weight depends on an object’s mass and the net force acting on the object. The given statement is true.
What is force?Force is defined as the push or pull applied to the body. Sometimes it is used to change the shape, size, and direction of the body.
The following equation help to understand the statement;
Force is defined as the product of mass and acceleration. Its unit is Newton.
F=ma
F=mg
W=mg
The weight of an item is determined by its mass and the net force exerted on it, according to Newton's second rule of motion. The provided assertion is correct.
Hence,the given statement is true.
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A car starts from rest and reaches a speed of 25m/s in 4 seconds. What is the acceleration?
Also, Calculate the distance the object traveled,
Can y’all help me with this one
Answer:
a = 6.25 m/s/s
d = 50 m
Explanation:
Given:
v1 (initial velocity)= 0 m/s (cz its at rest)
v2 (final velocity)= 25 m/s
t = 4s
a = ?
d = ?
to determine acceleration
a = (v2 - v1)/ t
= (25m/s - 0m/s)/4s
= 6.25 m/s/s
to determine distance traveled
d = 1/2(v1 + v2)t
=1/2(0m/s+25m/s)(4s)
=50 m
Answer:
Answer in explanation.
Explanation:
Using Equation
[tex]v = u + at[/tex]
where v is the final velocity
u is initial velocity
a is acceleration
t is time taken
given u = 0, v = 25, t = 4,
[tex]25 = 0 + 4a \\ 4a = 25 \\ a = 6.25 \frac{m}{ {s}^{2} } [/tex]
Now, using equation
[tex]v {}^{2} = {u}^{2} + 2as[/tex]
where v and u remains the same, a = 6.25 and s is the distance,
[tex](25) {}^{2} = \: {0}^{2} + 2(6.25)s \\ 12.5s = 625 \\ s = \frac{625}{12.5} \\ s = 50m[/tex]
mc2
Describe the process of nuclear fission and how the famous equation E
relates to this process.
frfyuegffffjhAnswer:
frjhgfjgresjytgfejygfjse
Explanation:
Compare and contrast chemical reactions and nuclear reactions in terms of particles involved . Select all the statements that apply Both chemical and nuclear equations are written with equal signs. Nuclear reactions create a difference in the number of protons, neutrons, and electrons after the reaction. A chemical reaction is the rearranging of atoms to form new substances. E=mc^ aleph 2 applies to both chemical and nuclear reactions. In a nuclear reactionparticles can transmute into others. Chemical reactions produce energy on levels comparable to nuclear reactions The total number of protons, neutrons, and electrons stay the same throughout the chemical reaction.
Answer:
. A chemical reaction is the rearranging of atoms to form new substances. E=mc^ aleph
1.Mention two uses of the concave mirror.
1.Discuss the theory of the two methods of determining focal length (f).
Answer:
1. telescope
2.
[tex]f = \frac{r}{2} [/tex]
[tex]f = \frac{r}{2} [/tex]f- focal length
[tex]f = \frac{r}{2} [/tex]f- focal length r- the radius of curvature of the mirror
[tex] \frac{1}{f} = \frac{1}{p} + \frac{1}{l} [/tex]
p-the distance of the object from the vertex of the mirror
l-the distance of the figure from the vertex of the mirror
(1 Point)
A truck's speed increases uniformly from 15 km h to 60 km/h in 20 s. Determine (a) the average
speed
Answer:
0.625 m/s
General Formulas and Concepts:
Unit 0
SI unit (distance) - metersSI unit (time) - secondsKinematics
Average Speed Formula: [tex]\displaystyle \frac{total \ distance}{time}[/tex]Explanation:
Step 1: Define
[Given] Initial speed: 15 km/h
[Given] Final speed: 60 km/h
[Given] time: 20 s
[Solve] Average speed
Step 2: Convert
Initial speed
Set up conversion: [tex]\displaystyle \frac{15 \ km}{h}(\frac{1000 \ m}{1 \ km})(\frac{1 \ hr}{60 \ min})(\frac{1 \ min}{60 \ s})[/tex]Multiply/Divide [Cancel out units]: [tex]\displaystyle \frac{25}{6} \ \frac{m}{s}[/tex]Final speed
Set up conversion: [tex]\displaystyle \frac{60 \ km}{h}(\frac{1000 \ m}{1 \ km})(\frac{1 \ h}{60 \ min})(\frac{1 \ min}{60 \ s})[/tex]Multiply/Divide: [tex]\displaystyle \frac{50}{3} \ \frac{m}{s}[/tex]Step 3: Solve
Set up: [tex]\displaystyle \frac{\frac{50}{3} \ \frac{m}{s} - \frac{25}{6} \ \frac{m}{s}}{20 \ s}[/tex]Subtract: [tex]\displaystyle \frac{\frac{25}{2} \ \frac{m}{s}}{20 \ s}[/tex]Divide: [tex]\displaystyle \frac{5}{8} \ \frac{m}{s}[/tex]A 16 lb weight stretches a spring 6 inches in equilibrium. It is attached to a damping mechanism with constant c. Find all values of c such that the free vibration of the weight has infinitely many oscillations.
Answer:
[tex]-8<c<8[/tex]
Explanation:
Given data:
Weight W = 16 lb
length l = 6/12 = 0.5 ft
hence, spring constant k = W/l = 16/0.5 = 32 lb/ft
The equation of motion of spring is
[tex]mx''+cx+kx=0\\0.5x''+cx'+32x=0[/tex]
the auxiliary equation can be written as
[tex]0.5r^2+cr+32=0\\r^2+2cr+64=0[/tex]
The discriminate of equation is
[tex]D =(2c)^2+-4(1)(64)\\=4(c^2-64)[/tex]
To get the value of the damping constant,
[tex]D<0\\4(c^2-64)<0\\c>-8, c<8\\-8<c<8[/tex]
What are the features of nanotechnology?
Answer:
Characteristics of Nanotechnology
Explanation:
Nanotechnology deals with putting things together atom by atom and with structures so small they are invisible to the naked eye. It provides the ability to create materials, devices and systems with fundamentally new functions and properties
Fossil fuels can be replaced.
Yet, they are considered
nonrenewable. Why?
A. Fossil fuels only take a few years to
replenish.
& Dirt
al
B. Fossil fuels take millions of years to
replenish.
C. Fossil fuels can never be replenished.
Silt