Answer:
Velocity and frequency
Explanation:
List four safety measures one should take when there is a cyclone warning.
Answer:
I'm gonna give you more than 4 So u can choose.
Turn off all electricity, gas and water.
Unplug all electrical appliances.
Keep your emergency kit close at hand.
If the building starts to collapse, protect yourself with mattresses, rugs.
Stay tuned to the radio for updates.
Stay inside until told it is safe to go outside.
given a circuit powered at 12V with R1, R2, R3 respectively of 10,20,30 Ohm, determine R4 in such a way that the Wheatstone bridge is in equilibrium and then calculate voltages and currents as for reference exercise.
Answer:
The balanced condition for Wheat stones bridge is
Q
P
=
S
R
as is obvious from the given values.
No, current flows through galvanometer is zero.
Now, P and R are in series, so
Resistance,R
1
=P+R
=10+15=25Ω
Similarly, Q and S are in series, so
Resistance R
2
=R+S
=20+30=50Ω
Net resistance of the network as R
1
and R
2
are in parallel
i=
R
V
=
50
6×3
=0.36 A.
Explanation:
an inclinded plane makes work easier by increasing the distance and blank the force
Hi! I believe your answer is decreasing. An inclined plane makes work easier by decreasing the amount of effort force needed, but increases the distance. I hope this helps you! Good luck and have a great day. ❤️✨
which of the following statements about ocean waves a true?
A. they travel on the surface of the water
B. they travel deep underwater
C. they are secondary waves
D. they are primary waves
The assertion that ocean waves move on the water's surface is accurate. Therefore, choice A is right.
What is the ocean waves?A wind wave, water wave, or tornado water wave is a surface wave that develops on a body of water's free surface as a result of the air flowing over the ocean's surface. The fetch is the distance at which two objects come into touch when facing the wind.
The wind is the most frequent source of waves. The friction between the wind and the surface of the water produces wind-driven waves, also known as surface waves. A wave crest is produced when wind continuously disturbs the water's surface in an ocean or lake.
The statements about ocean waves a true will be they travel on the surface of the water.
Thus, option A is correct.
More about the ocean waves link is given below.
https://brainly.com/question/101258
#SPJ6
I need help please .....
Answer:
Explanation:
All of the energy in the pendulum is kinetic energy and there is no gravitational potential energy. However, the total energy is constant as a function of time.
Solenoid 2 has twice the radius and six times the number of turns per unit length as solenoid 1. The ratio of the magnetic field in the interior of 2 to that in the interior of 1 is:___________A. 2B. 4C. 6D. 1E. 1/3
Given :
Solenoid 2 has twice the radius and six times the number of turns per unit length as solenoid 1.
To Find :
The ratio of the magnetic field in the interior of 2 to that in the interior of 1.
Solution :
We know, magnetic field in the interior of a solenoid is given by :
[tex]B = \dfrac{\mu ni}{L}[/tex]
Let, length of solenoid 2 is L.
Therefore, length of solenoid 1 is 6L.
[tex]B_a=\dfrac{\mu (6n)i}{L}\\\\B_b = \dfrac{\mu n i}{L}[/tex]
Dividing [tex]B_a[/tex] by [tex]B_b[/tex] :
[tex]\dfrac{B_a}{B_b}=\dfrac{\dfrac{\mu (6n)i}{L}}{\dfrac{\mu n i}{L}}\\\\\dfrac{B_a}{B_b}=6[/tex]
Therefore, the correct answer is C. 6.
What is a magnetic material?
Answer:
Diamagnetism.
Paramagnetism.
Ferromagnetism.
Ferrimagnetism.
Antiferromagnetism.
Explanation:
Magnetic materials are materials studied and used mainly for their magnetic properties. The magnetic response of a materials is largely determined by the magnetic dipole moment associated with the intrinsic angular momentum, or spin, of its electrons.
Answer:
materials studied and used mainly for their magnetic properties
Explanation:
Iron is an extremely well-known ferromagnetic metal.
Nickel is another popular magnetic metal with ferromagnetic properties.
also, Magnetism is the force exerted by magnets when they attract or repel each other. :)
The theory that attitudes will be formed and changed according to one’s actual behaviors is the __________ theory. A. learning B. dissonance C. self-perception D. balance
Answer:
Letter C Cuh
Explanation:
Answer:
C. self-perception
Explanation:
Cuh above me is right
Sometimes in the winter, ice crystals grow directly from the moisture in the air. As the water changes from a gas to a solid, the molecules
Group of answer choices
slow down as they gain energy.
slow down as they lose energy.
speed up as they lose energy.
speed up as they gain energy.
Answer: B. slow down as they lose energy
What makes the atmosphere an important part of Earth’s system?
Answer:
water exchange carbon dioxide is taken away and oxygen is made
If circumference C = 2 pi r where r is the radius, how long would it take a car to travel
once around a circular track with a 80 meter radius if it is traveling 50 m/s ?
George got a bad grade on the test because he decided he would rather sleep than study. this is an example of a __ attribution
the right answer for this question would be dispositional
Answer:
dispositional
Explanation:
A net force of 10 N accelerates a mass of 5 kg with an acceleration of 2
m/s2. If the mass of the object is doubled, then the acceleration will now
be: (Remember Newton's 2nd Law: EF=ma)
4 m/s2
2 m/s2
O 1 m/s2
O 0.25 m/s2
Answer:
1 m/s²
Explanation:
The following data data were obtained from the question:
Net force (F) = 10 N
Initial mass (m1) = 5 Kg
Initial acceleration (a1) = 2 m/s²
Final mass (m2) = double the initial mass = 2 × 5 = 10 kg
Final acceleration (a2) =?
The final acceleration of the object can be obtained as follow:
Recall:
Force (F) = mass (m) × acceleration (a)
F = m × a
Keeping the force constant, we have
m1a1 = m2a2
With the above formula, we can obtain the final acceleration of the car as follow:
Initial mass (m1) = 5 Kg
Initial acceleration (a1) = 2 m/s²
Final mass (m2) = 10 kg
Final acceleration (a2) =?
m1a1 = m2a2
5 × 2 = 10 × a2
10 = 10 × a2
Divide both side by 10
a2 = 10 /10
a2 = 1 m/s²
Therefore, the final acceleration of the car will be 1 m/s²
When you use a
spray bottle, you force air over
a small tube inside the bottle.
Explain why the liquid inside
the bottle comes out.
Answer: Spray bottles are an extremely useful type of machine and an excellent demonstration of basic plumbing principles. A spray-bottle head is made up of only a few parts. It has a trigger lever, which activates a small pump. This pump is attached to a plastic tube that draws cleaning fluid from the bottom of the reservoir. The pump forces this liquid down a narrow barrel and out a small hole at the gun's muzzle. The hole, or nozzle, serves to focus the flowing liquid so that it forms a concentrated stream.
The only complex element in this design is the fluid pump, and it's about as simple as they come. The main moving element is a piston, housed inside a cylinder. Inside the cylinder, there is a small spring. To operate the pump, you pull the trigger back, pushing the piston into the cylinder. The moving piston compresses the spring, so when you release the trigger, the piston is pushed back out of the cylinder. These two strokes of the piston, into the cylinder and out again, constitute the entire pump cycle.
Explanation:
Awnser: The liquid comes out because you're using your hand to squeeze the handle, which forces it out.
In Einstein’s theory of gravitation, gravity is due to:
A)the acceleration of the universe
B)the presence of mass
C)the rotation of the universe
D)the curvature of spacetime
E)the speed of light
Answer:
B, caused by the presence of mass
Explanation:
What is the potential energy of a puppy that weighs 18 N istting in a high chair 2 m high?
Answer:
Potential energy =mass* acceleration due to gravity * height
mass*acceleration due to gravity =weight
hence potential energy of the puppy= weight * height
=18*2
=36 joule
If you use a horizontal force of 30.0 N to slide a 12.0 kg wooden crate across the floor at a
constant velocity, what is the normal force?
Answer:
i found: μk= 0.25
Explanation:
Newton's law is split into two components along
x and y , that, using our data, give:
30 − μkRn = 0
Rn = mg = 12⋅9.81 = 117.7 ≈ 118N
So: μk = 30/118 = 0.25
Please Mark Brilliant
A 3.35 kg object initially moving in the positive x direction with a velocity of 4.90 m s collides with and sticks to a 1.88 kg object initially moving in the negative y direction with a velocity of 3.12 m/s. Find the final components of velocity of the composite object.
Answer:
The final components of velocity of the composite object is 3.33 m/s.
Explanation:
Given;
mass of the first object, m₁ = 3.35 kg
initial velocity of the first object, u₁ = 4.90 m/s in positive x-direction
mass of the second object, m₂ = 1.88 kg
initial velocity of the second object, u₂ = 3.12 m/s in negative y-direction
initial momentum of the first object, P₁ = 3.35 x 4.9 = 16.415 kgm/s
initial momentum of the second object, P₂ = 1.88 x 3.12 = 5.8656 kgm/s
The resultant velocity of the two objects is given by;
R² = 16.415² + 5.8656²
R² = 303.858
R = √303.858
R = 17.432 kgm/s
Apply the principle of conservation of linear momentum for inelastic collision;
total initial momentum before = total final momentum after collision
P₁(x) + P₂(y) = Pf
R = Pf
R = v(m₁ + m₂)
17.432 = v(m₁ + m₂)
where;
v is the final components of velocity of the composite object
[tex]v = \frac{17.432}{m_1 + m_2} \\\\v = \frac{17.432}{3.35+1.88} \\\\v = 3.33 \ m/s[/tex]
Therefore, the final components of velocity of the composite object is 3.33 m/s.
Elizabeth .........................................................................
Answer:
who's elizabeth? haha
Answer:
What about it?
Explanation:
help please! thank you! please dont plagiarism my teacher checks for plagiarism ;-;
Answer:
the reason why the crate won't move to the direction of the force being applied (F app). is because the (Fgravity) is pulling it down making it heavy to move
А A pool of water of refractive index
4/3! is 60cm deep. Find its apparent
depth when viewed vertically through
air.
Answer:
Apparent depth = 45 cm
Explanation:
The refractive index of water in a pool, n = 4/3
Real depth, d = 60 cm
We need to find its apparent depth when viewed vertically through air. The ratio of real depth to the apparent depth is equal to the refractive index of the material. Let the apparent depth is d'. So,
[tex]n=\dfrac{d}{d'}\\\\d'=\dfrac{d}{n}\\\\d'=\dfrac{60}{\dfrac{4}{3}}\\\\d'=45\ cm[/tex]
So, the apparent depth is 45 cm.
Ciara is swinging a 0.015 kg ball tied to a string around her head in a flat, horizontal circle. The radius of the circle is 0.70 m. The ball is going 7.33 m/s.
If the speed is tripled, what happens to its centripetal force?
a)The new centripetal force is 1/3 what it was
b)The new centripetal force is 9 times more
c)The new centripetal force is 1/9 what it was
d)The new centripetal force is 3 times more
Answer:
b)The new centripetal force is 9 times more
Explanation:
The formula to apply in this case is that of tension force on a spring which is equal to the centripetal force.
T= mv²/r --------i
where T is the tension on the spring
v= velocity/speed of the ball = 7.33 m/s
m= mass of the ball , 0.015 kg
r= radius of circle , 0.70 m
Use the values in the formula as;
T= {0.015 * 7.33² } / 0.70
T= 0.8059335 / 0.70
T= 1.15 N ---------i
If the speed is tripled then;
v= 21.99 m/s
T= 0.015 * 21.99² / 0.70
T= 10.36 N ------ii
Check the changes by dividing i and ii as ;
10.36 / 1.15 = 9.01
This is 9 times more hence if the speed is tripled ,the new centripetal force is 9 times more.
The density of gold is 19.3 gm/cc. Express it's value in SI unit.
Answer:
SI unit of density is kg/m^3
Using unit conversion:
density = 19.3 * 1000 kg/m^3
Explanation:
I assume that you are asking for the density conversion to SI, sorry if this isn't what you were asking.
Which Energy transformation will occur when this rubber band is let go elastic energy -chemical energy mechanical energy -electrical energy chemical energy -mechanical energy elastic energy mechanical- energy elastict
Elastic Energy - Mechanical Energy
Enter an expression for the force constant for the floating raft, in terms of L, g, and the density of water, ρ.
Answer:
K = ρL²g
Explanation:
Consider L as the length of the raft inside the water when the raft is displaced through additional distance y;
Then:
F = upthrust ( restoring force) = weight of the liquid displaced.
[tex]F = V_{\omega} \rho_{\omega} g= A y \rho_{\omega} g[/tex]
where;
A = L²
[tex]\rho_{\omega} = \rho[/tex]
F = ky.
Then,
[tex]Ay \rho g = ky[/tex]
[tex]L^2y \rho g = ky[/tex]
Divide both sides by y
K = ρL²g
“An object completely submerged in a fluid displaces its ovn volume of fluid". This is:
Answer:
Archimedes' principle
Explanation:
An object completely submerged in a fluid displaces its own volume of fluid is postulate from the Archimedes' principle.
If a fluid, the liquid supports the body by a buoyant force. The buoyant force is the reaction to the imposed weight exerted by the object placed in the medium. The upward force on the body is the upthrust.The acceleration due to gravity on Earth is 9.81 m/s² [down]. A hockey puck was launched from the ice with a velocity of 50.0 m/s [up]. Assuming no friction, determine the velocity of the puck at its maximum height.
Answer:
0 m/s.
Explanation:
When an object is shot up into the air the only force acting on it is gravity while neglecting wind. As the gravity is acting on the object it keeps decelerating till its velocity becomes 0 after which it can go no further. The maximum height of the object is at this point.
So, at its maximum height the velocity of the puck will be zero.
A crane lifts a 425 kg steel beam vertically upward a distance of 614.4 m
How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces.
PHYSICS
*not sure about the answer but here we go*
Mass = 425 kg
distance = 614.4 m
acceleration = 1.8 m/s²
Answer :
Count Force first.
[tex]f \: = m \: \times a[/tex]
F = 425 × 1,8
F = 765 N ✅
Now let's count Work.
[tex]w \: = \: f \: \times s[/tex]
W = 765 × 614.4
W = 470016 J ✅
Read each scenario below. Then select the answer choices that complete the sentences,
A car engine has
power than a house because a car engine does the same amount of work in
time,
Yaserin and Raj each had 10 tones of equal weight to stack next to each other on the same shelt, at the same height
and in the same arrangement. Vasarin completed the task in 2 minutes, wille Raj took 3 minutes to stack his bles,
Raj applied
power than Yaskrin because his stacking took turve to do the same amount of
Answer:
Higher
Lesser
Lesser
Longer
Explanation:
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ryanzl6659
14 hours ago
Physics
College
Read each scenario below. Then select the answer choices that complete the sentences,
A car engine has HIGHER power than a house because a car engine does the same amount of work in LESSER time,
Yaserin and Raj each had 10 tones of equal weight to stack next to each other on the same shelt, at the same height and in the same arrangement. Vasarin completed the task in 2 minutes, wille Raj took 3 minutes to stack his bles,
Raj applied LESSER power than Yaskrin because his stacking took LONGER to do the same amount of
Answer:
More
Less
Less
More
Explanation:
i got all correct
i) Give two practical
application of static friction
1). Walking / Driving
If there were no static friction between the soles of your shoes and the ground, then you could move your feet back and forth but your body would never go anywhere.
Same for using tires to move a car, a bus, a bicycle or a motorcycle.
2). Sleeping
If there were no static friction between your jammies and the sheet, you would slide right off of the bed whenever there was the slightest breeze of air in the room.