X - rays are highly penetrating electromagnetic radiations that are formed when the cathode rays strikes a dense metal.
It has many characteristics such as :
bears no charge.travels with the speed of light.can ionize gases.An ant crawls 50 cm to the right, stops, and then crawls 30 cm to the left. Calculate the distance that the ant travels, and calculate the displacement of the ant.
Answer and Explanation:
If the ant was to crawl 50cm to the right, then come back 30 cm, then the total distance walked would be 80cm.
- Combine 50cm and 30cm to get 80 cm.
For displacement, the answer is 20 cm.
- When calculating displacement, you use the initial (starting) distance. and subtract that from the final distance, giving you the displacement, or the amount traveled from the starting point to the final point if you were to make a straight line from the starting point to end point. (0 to 50, then back 30 the same direction, so subtract 30 from 50 to get 20)
#teamtrees #PAW (Plant And Water)
I hope this helps!
Answer:
Distance = 80cm
Displacement = 20cm
Explanation:
Distance does not depend on direction, its the total amount traveled.
Displacement has a direction. Displacement is how far your stopping point is from the beginning point.
The ant could have walked 50cm to the east, stopped and turned around, walked 50cm to the west, walking a total distance of 100cm, but the displacement would be 0 because he ended up at the same spot that he started. It can get much more complicated than this, but this is a good start.
Báo cáo thực hành
Bài 1: Sóng trên dây: https://phet.colorado.edu/vi/simulation/wave-on-a-string
Bài 2: Cầu cân bằng: https://phet.colorado.edu/sims/html/circuit-construction-kit-dc-virtual-lab/latest/circuit-construction-kit-dc-virtual-lab_vi.html
Answer:
which language is this
Explanation:
5. A police car siren emits a frequency of 3900 Hz while driving down the road at a speed of 27.4. What frequency will a person
driving a car at 20.7 m in the opposite direction behind the police car hear?
fobs =
Hz
Answer:
f = 3900(343 - 20.7) / (343 + 27.4) = 3,394 Hz
An AC generator consists of eight turns of wire, each having area A =9.0x 10-2 m2, with a total resistance of 12.0 V. The coil rotates in a magnetic field of 0.500 T at a constant frequency of 60.0 Hz, with axis of rotation perpendicular to the direction of the magnetic field. (a) Find the maximum induced emf. [3] (b) What is the maximum induced current? [1] (c) Determine the induced emf and current as functions of time. [2] (d) Wiat maximum torque must be applied to keep the coil turning? (3)
We have that the maximum induced emf,the maximum induced current, the induced emf and current as functions of time,The maximum torque must be applied to keep the coil turning are
a )[tex]E_{max}=135.6v[/tex]
b) [tex]I_max=11A[/tex]
c) [tex]I_i=11A sin(376.9rad/s t)[/tex]
[tex]E_i=135.6v sin(376.9rad/s )[/tex]
d) [tex]T=4.07Nm[/tex]
From the Question we are told that
Area [tex]A =9.0x 10^{-2} m^2[/tex]
Total resistance of [tex]R=12.0 V.[/tex]
Magnetic field of [tex]B=0.500 T[/tex]
Constant frequency [tex]F=60.0 Hz[/tex]
Eight turns [tex]N=8N[/tex]
A)
Generally the equation for the maximum induced emf is mathematically given as
[tex]E=NAB\omega[/tex]
Where
[tex]\omega=2\pi f[/tex]
[tex]\omega=2*3.142*60[/tex]
[tex]\omega=376.9rad/s[/tex]
[tex]E_max=8*(9.0x 10-2)*0.5*376.9[/tex]
[tex]E_{max}=135.6v[/tex]
B)
Generally the equation for the maximum induced Current is mathematically given as
[tex]I_m=\frac{E}{R}\\\\I_max=\frac{135.6}{12}\\\\I_max=11A[/tex]
C)
Generally for the induced emf and current as functions of time we Substitute [tex]E_{max}[/tex] and [tex]\omega[/tex] into
[tex]E_i=E_{max} sin\omega t[/tex]
[tex]E_i=135.6v sin(376.9rad/s t)[/tex]
And Same for induces Current
[tex]I_i=I_{max} sin\omega t[/tex]
[tex]I_i=11A sin(376.9rad/s t)[/tex]
D)
Generally the equation for the maximum torque is mathematically given as
[tex]T = rB sin θ[/tex]
Where
r= maximum magnetic moment
[tex]r=NIAr= 8*11.3*0.090r=8.14m^2[/tex]
Therefore
[tex]T = 8,14*0.500 sin 90[/tex]
[tex]T=4.07Nm[/tex]
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Example of optical object
Answer:
Telescope,cameras
Hope it helped
if an object is accelerating at 4 m/s^2 and has a mass of 8 kg, what is the net
force (in newtons, N) on the object?
Answer:
The force applied is 32 N
Explanation:
F = ma
F = 8 × 4
F = 32 N
Answer:
[tex]\boxed {\boxed {\sf 32 \ Newtons}}[/tex]
Explanation:
We are asked to find the net force on an object. According to Newton's Second Law of Motion, force is the product of mass and acceleration. Therefore, the formula for calculating force is:
[tex]F= m \times a[/tex]
The mass of the object is 8 kilograms and its acceleration is 4 meters per second squared.
m= 8 kg a= 4 m/s²Substitute these values into the formula.
[tex]F= 8 \ kg \times 4 \ m/s^2[/tex]
Multiply.
[tex]F= 32 \ kg *m/s^2[/tex]
Convert the units. 1 kilogram meter per second squared is equal to 1 Newton. So, our answer of 32 kilogram meters per second squared is equal to 32 Newtons.
[tex]F= 32 \ N[/tex]
The net force on the object is 32 Newtons.
Therefore, they
experience a
and produce
surface tension.
Answer:
Explanation:
1.020 please help!!
Mark brainliest
Answer:
0.0035 mg
Explanation:
1 mcg = 1e-3 mg
》35 mcg = 35×10^-3 mg
= 0.0035 mg
Which of the following is certain to change as a ball
accelerates?
A mass of the ball
B inertia of the ball
C velocity of the ball
Dforce acting on the ball occasionally
Answer:
C. Velocity of the ball
Explanation:
This is because as the acceleration of the ball increases, there will be an increase in the velocity rate and decrease in the time.
See the formula,
a=m/s²
A car, initially traveling 28.0ft/s, steadily speeds up to 50.0ft/s in 7.40s. Determine all unknowns and answer the following question.
How far did the car travel during this time?
Explanation:
Given:
[tex]v_0 = 28.0\:\text{ft/s}[/tex]
[tex]v = 50.0\:\text{ft/s}[/tex]
[tex]t = 7.40\:\text{s}[/tex]
First, we calculate the acceleration of the car during this time:
[tex]v = v_0 + at \Rightarrow a = \dfrac{v - v_0}{t}[/tex]
Plugging in the given values, we get
[tex]a = \dfrac{50.0\:\text{ft/s} - 28.0\:\text{ft/s}}{7.40\:\text{s}} = 2.97\:\text{ft/s}^2[/tex]
Now that we have the value for the acceleration, we can solve for the distance traveled during the time t:
[tex]x = v_0t + \frac{1}{2}at^2[/tex]
[tex]\:\:\:\:=(28.0\:\text{ft/s})(7.40\:\text{s})[/tex]
[tex]\:\:\:\:\:\:\:\:\:\:\:\:+ \frac{1}{2}(2.97\:\text{ft/s}^2)(7.40\:\text{s})^2[/tex]
[tex]\:\:\:\:= 289\:\text{ft}[/tex]
Write three or four sentences to describe the process by which the sound of a book dropped on a desk reaches your ear. (3 points)
A particle is projected from a point on a horizontal plane and has an initial velocity of 28root 3 m/s at an angle of 60 degree .find the greatest heights reached by the particle
Answer:
uujjjjjctc7tox7txr9ll8rz8lr5xl8r6l8dl85x8rl5x8rl5x8rl5xrx8l58rk5xr8l5xr6l8xr68lc
What would make oppositely charged objects attract each other more?
o increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
O decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object
O increasing the distance between the positively charged object and the negatively charged object
O maintaining the distance between the positively charged object and the negatively charged object
Answer:
a: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
The oppositely charged objects attract each other more is option a. It increased the positive charge and the negative charge.
The Attraction of the oppositely charged:At the time when the oppositely charged objects are attracted to each other more so here the positive charge should be increased with respect to the positive charge object and the negative charge is increased with respect to the negative charge object
Hence, the first option is correct.
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Yo someone help me on dis jawnt rq plzzz!
Answer:
the answer is 45.6 kg = 45600 g
a simple machine has efficiency 90℅ what does it mean
Explanation:
A simple machine has efficiency 90℅, it means that 90% of the applied force is used in doing useful work and 10% is wasted due to overcoming friction.
Which of the following measurement
tools would you need to determine the
weight of an iPad?
A. graduated cylinder
B. double pan balance
C. scale
D. triple beam balance
Answer:
It would be C.scale, because
A. is for liquid
B. is for measuring 2 things
and D. is for i don't know(lol)
but i think the scale would be the easiest way to measer an iPad
A projectile is launched with an initial speed of 15.5 m/s at an angle of 78 degrees above the horizontal,
What are the x and y components of the initial velocity?
Answer:
Explanation:
The formula for the x-components of the velocity vector is
[tex]V_x=Vcos\theta[/tex] and for the y-components it is
[tex]V_y=Vsin\theta[/tex] where V in both of those formulas is the magnitude of the velocity.
For the x-component, taking into consideration significant digits:
[tex]V_x=15.5cos(78)\\V_x=3.2\frac{m}{s}[/tex]
For the y-component, taking into consideration significant digits:
[tex]V_y=15.5sin(78)\\V_y=15\frac{m}{s}[/tex]
Explain how the lithosphere, hydrosphere, and atmosphere individually and collectively affect the biosphere. (2 points)
The lithosphere is the solid layer of Earth, the hydrosphere is the water-based part, and the atmosphere is the air, they work together to shape the biosphere.
What is the lithosphere?The lithosphere is the soil part that composes the Earth's planet (i.e., the soil), the hydrosphere refers to oceans and all water bodies, while the atmosphere is the layer of air. These three layers interact with biotic factors to shape the biosphere.
In conclusion, the lithosphere is the solid layer of Earth, the hydrosphere is the water-based part, and the atmosphere is the air, they work together to shape the biosphere.
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The temperature at which water leaves the boiler is?
Answer:
The average setting for a gas-powered hot water boiler is 180°F. This provides the appropriate level needed for most cold weather temperatures. If you can raise the temperature manually, do not set it any higher than 210°F (which is often the limit), and try to remain down at 190°F if you need the extra heat.
why pet cats are not called Panthera Cantus.
Panthera is a genus within the family Felidae that was named and described by Lorenz Oken in 1816 who placed all the spotted cats in this group.
1.7 A7V battery delivers a 0.6 A current to an electric motor connected across its terminals . a) What power is delivered to the motor? b) If the motor runs for 6 minutes, how much electric energy is delivered to the motor?
Answer:
P=4.2V E=1512J
Explanation:
P=?
P=VI
Putting the values
P=2*0.6
P=4.2VE=?
E=P*t
E=4.2*6*60
E=1512Jcan someone help me this question
Answer:
Volume of wood is 68-50 = 18 cm³
Explanation:
Hope it helps youIn the study of Physics, the "Universal Gas Law" is not considered a law at
all.true or false
Answer: It’s False hope this helps
Explanation:
The answer is False, the Universal Gas Law" is considered law in Physics.
The universal gas law is considered law in physics and it states that the product of the Pressure and Volume of a given mass of gas is equivalent to the product of the number of moles, Boltzmann constant, and the temperature.
It is also known as the Ideal gas equation and is expressed mathematically as:
PV = nRT where:
P is the pressure
V is the volume
n is the number of moles
R is the Boltzmann constant
T is the absolute temperature.
Hence from the above definition, we can see that Universal Gas Law" is also considered a law in physics. The answer is False
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The working principle of a washing machine is
A) reverse osmosis
B) diffusion
C) centrifugation
D) dialysis
Explanation:
The working principle of a washing machine is centrifugation .
Answer:
The correct option is C) centrifugation
Explanation:
The washing machine consists of a centrifuge for this purpose. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be very strong.
Which of the following materials can be charged: plastic, glass, metal? 
• This question comes from the study of electrostatics.
Materials that can be charged from the options are; plastic and glass.
• Now, among the 3 listed materials, plastic and glass are insulators whereas metal is a conductor because it can conduct electricity.
• With respect to insulators and conductors as regards charging by electrostatics, we can say that in conductors if you charge a portion of them, the charges inside will have the freedom of movement. However, inside of the material, If a charge is added in another portion of the conductor, the previously introduced charges will combine to neutralize this new charge.
• With respect to insulators, the charges that are put at the surface of the object will remain there because unlike conductors, these insulators do not allow for freedom of movement of charges inside the material that could neutralize.
• Thus, the materials that can be charged by rubbing are plastic and glass.
• Read more here; brainly.in/question/32842271
A truck travels 40 m while slowing down from 15 m/s to 10 m/s. How long does it take to do this?
Answer:
4s
Explanation:
Which of the following does not represent a question that can be answered by science?a. How much energy is released in a given nuclear chain reaction? b. Can a nuclear chain reaction be controlled? c. Should uncontrolled nuclear reactions be used for military applications?
d. What is the half-life of a waste product of a nuclear reaction?
Answer:
c. Should uncontrolled nuclear reactions be used for military applications?
Explanation:
The question on wether to use technology for military applications, is not a science question but a moral dilemma
The question that can not be answered by science is the question; "Should uncontrolled nuclear reactions be used for military applications?".
Science is empirical in its approach. This implies that the questions that are answered by science are questions that are testable and can be be verified in a laboratory.
Science does not answer questions that deal with the opinions of various individuals. That is completely outside the purview of scientific investigation.
Hence, science does not answer the question; Should uncontrolled nuclear reactions be used for military applications?
This question deals with moral values and the opinions of people about a matter and not empiricism.
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Grive reasons The units of force and pressure are called derived units. an
How ??
Force:-
We know
According to newtons second law
[tex]\boxed{\sf Force=Mass\times Acceleration}[/tex]
[tex]\\ \sf\longmapsto Force=kgm/s^2[/tex]
We don't use it
[tex]\\ \sf\longmapsto Force=Newton(N)[/tex]
Hence its a derived unit.
Pressure:-
[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{N}{m^2}[/tex]
[tex]\\ \sf\longmapsto Pressure=Pascal(Pa)[/tex]
Hence its a derived unit
c. A car was running with a velocity of 20m/s. what will be its velocity after 30s if it's acceleration is 5m/s2
[tex] \large \mathfrak{Solution : }[/tex]
let's use first equation of motion to solve this ;
[tex] \boxed{ \boxed{ v = u + at}}[/tex][tex]v = 20 + (5 \times 30)[/tex][tex]v = 20 + 150[/tex][tex]v = 170 \: \: m/s[/tex]Velocity after 30 seconds = 170 m/s
The speed of sound through air is approximately 343 m/s. What is the speed in miles per hour
Answer:
At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,235 km/h; 1,125 ft/s; 767 mph; 667 kn), or a kilometre in 2.9 s or a mile in 4.7 s.
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