Answer:
v = 24 m
Explanation:
Given that,
The x component of the vector = 12 m
The y component of the vector = 21 m
We need to find the magnitude of a vector. It can be solved as follows :
[tex]v=\sqrt{12^2+21^2} \\\\=24.18\ m[/tex]
or
v = 24 m
So, the magnitude of the vector is equal to 24 m.
A rock dropped in a graduated cylinder raises the level of water from 20 to 35 mL. The Rock has a mass of 45 g. What is the density of the rock?
Answer:
3 is the correct answer might be helpful
I need help ASAP
What matter has lots of space between the charged particles?
1. Plasma
2. Gas
Please help Quick! will mark BRAINLIEST
Answer:Gas- D. Has lots of space between particles and is easily compressible. Explanation: Solid, Liquid, gas and plasma are states of matter.
Explanation:
What is the name for forces that act on an object and cancel each other out causing the object to be at rest?
Answer:
If an object is at rest, then the forces acting on both sides are equal and there is resultant force is 0.
I need help picture above
Answer:
99.75 is the correct answer
In what way is consciousness a construct?
Answer:
Consciousness is a psychological construct because it is believed to exist, but we are unable to physically measure it, so descriptions are 'constructed' to explain it. ... The more aware we are of our thoughts, feelings, perceptions and surroundings, the higher the level of consciousness.
Explain why a smart meter monitors the amount of electrical energy being used as well as the time at which it is being used.
Answer:
Smart Meters measure both the amount of electrical energy used and the time at which it is being used because they are used to monitor the energy consumption at real time, such that the time of use of energy can be monitored, thereby enabling several utility functions for load sharing and maintenance, including;
i) Time of use tariffs, where energy is billed based on peak and off peak periods, which increases profits to the producer, reduces cost for some consumers, encourages more even hourly and daily usage of electricity, lower maintenance cost, lower capital expenditure for peak stations, and reduces carbon emission
ii) Guarantees more accurate energy consumption measurement and billing
iii) Accurate crew dispatch to fault locations
iv) Prevent fraud due to tampering with meter
v) Increase customer confidence in billing
Explanation:
The current illustrated in the diagram is directed upward in a straight vertical wire. A compass is placed alongside the wire at the X mark. Which way will the compass point?
- north
- south
- west
- east
The right answer is South. But why? Thank you.
Answer: South
Explanation:
According to the right-hand thumb rule, if the thumb's direction indicates the current, then the wrapping of fingers gives the direction of the magnetic field.
In the given case, magnetic field lines around the wire are in the form of concentric circles. If the compass is placed at x, then the direction of the magnetic field line will be tangential to the concentric circles, which will point toward the south.
how would this affect the electrostatic force between them?
The answer is increase
Explanation:
What does Positive electrons mean
Answer:
Protons and Electrons
For every proton in an atomic center, somewhere, in an orbital, there will be an electron. A proton carries a positive charge (+) and an electron carries a negative charge (-), so the atoms of elements are neutral, all the positive charges canceling out all the negative charges.
Explanation:
thank me later
the electromagnet shown in the image has a wire coiled 5 times around a nai. it can lift up to 7 metal paper clips. What two changes would cause the electromagnet to increase its electromagnetic force and lift more paper clips?
Answer:
Explanation:
The electromagnetic force of an electromagnet can be increased by:
1. wrapping the wire around the coil more times; or
2. increasing the current passing through the coil.
The two changes would cause the electromagnet to increase its electromagnetic force and lift more paper clips:
increase the number of turns of wire on the core.increase the amount of current flowing through the wire.What is electromagnet?A coil of wire is used to create electromagnets (wire curled in series). This generates a magnetic field more effectively than a wire running straight. By tightly winding a wire around a strong magnetic core formed of an iron-based substance, this effect can be amplified.
An electromagnet is created by winding an insulated copper wire either in the shape of a solenoid or a U around a soft iron core and running current through it.
The quantity of wire turns twisted around the coil determines an electromagnet's magnetic field's strength. how much current is passing via the cable.
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The universe could be considered an isolated system because
many people think that no energy or matter exists outside the universe
energy and matter are created in the universe and flow freely into and out of the universe
energy is created outside the universe and matter is created within the universe
energy is created in the universe and matter is transferred out of the universe
Answer:
A(many people think that no energy or matter exists outside the universe)
Explanation:
How many electrons are contained in 1.0 C of charge? What is the mass of the electron in 1.0C of charge?
There are approximately 6.24 x 10¹⁸ electrons contained in 1.0 C of charge. The mass of the electron in 1.0 C of charge remains the same as the mass of an electron, which is approximately 9.109 x 10⁻³¹ kg.
We may utilise the elementary charge, which represents the charge of a single electron, to calculate how many electrons are present in 1.0 C of charge. It is estimated that the elementary charge is 1.602 x 10-19 C.
Number of electrons = Charge ÷ Elementary charge
Number of electrons = 1.0 C ÷ (1.602 x 10⁻¹⁹ C)
Calculating the division:
Number of electrons ≈ 6.24 x 10¹⁸ electrons
Therefore, there are approximately 6.24 x 10¹⁸ electrons contained in 1.0 C of charge.
It is crucial to remember that the electron's mass is unaffected by the charge when considering the electron's mass in 1.0 C of charge. Regardless of the charge it carries, an electron has a mass of about 9.109 x 10⁻³¹ kg.
Thus, the mass of one electron, which is roughly 9.109 x 10⁻³¹ kg, remains constant in 1.0 C of charge.
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the weight of the buggy was 105N on earth And 40N on mars. Why was the weight of the buggy less on mars than earth?
Answer: The gravity on Mars is considerably less than it is on Earth, so while the buggy still has the same physical mass, its relative weigh it considerably less.
The dice in a backgammon set are cubes with each side measuring 10 mm. What is the volume of these dice
Answer: 1*10^3 mm^3
That’s it
Can somebody help I'll give brainliest
Sorry my answer was wrong :P
Which box will not accelerate?
Answer:
b
Explanation:
i know
Answer:
b one will not accelerate
Please help!!
What happens to the apparent wavelength in the doppler effect example as the wave source moves forward, towards you?
Answer:
The waves travel at the same speed, but the observed frequency depends on any relative motion between the observer and source. When the observed frequency changes, so does the wavelength. If the observer and source are moving toward each other, then the frequency increases and the wavelength decreases
Explanation:
Hope it helps.
When spray is applied to a car, the paint has a negative charge and the surface of the car has a positive charge. Some processes use a negatively charged paint and a grounded object. Explain why this also works.
Answer:
Based on the properties electrically charged particles, we have that unlike charges attract and like charges repel each other. In order for proper application of an electrostatically negatively charged paint to be properly applied on the metal body surface of a vehicle, require that for attraction, the surface of the vehicle should be grounded and positively charged so as to effectively attract the negatively charged paint particles as it exits the nozzle, to form a strong attachment with the positively charged surface of the vehicle
Explanation:
A child with a mass of 23 kg rides a bike with a mass of 5.5 kg at a velocity of 4.5 m/s to the south. Compare the momentum of the child with the momentum of the bike
Answer:
Explanation:
Given the following data;
Mass of child = 23 kg
Mass of bike = 5.5 kg
Velocity = 4.5 m/s
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
[tex] Momentum = mass * velocity [/tex]
To find the momentum of each of them;
I. Momentum of the child
Momentum C = mass * velocity
Momentum C = 23 * 4.5
Momentum C = 103.5 Kgm/s
II. Momentum of the bike
Momentum B = mass * velocity
Momentum B = 5.5 * 4.5
Momentum B = 24.75 Kgm/s
Hence, we can deduce from the calculations that the momentum of the child is greater than that of the bike because of the higher mass possessed by the child.
39. A dog runs on a waxed floor at an initial speed of 2 m/s. It slides to a stop with an
acceleration of -0.43 m/s2. How long does it take for the dog to stop?
Answer:
Explanation:
Use the one-dimensional equation
[tex]v_f=v_0+at[/tex] where vf is the final velocity of the dog, v0 is the initial velocity of the dog, a is the acceleration of the dog, and t is the time it takesto reach that final velocity. For us:
0 = 2 + -.43t and
-2 = -.43t so
t = 4.7 seconds
how do various factors affect climent
Answer:
The factors affecting climate are latitude, altitude, land and water distribution, distance from the sea, distance from the sun, prevailing winds and ocean currents, surface covering the land, volcanism, solar constant sunspots, wind direction and nature of mountain chains, mountain barriers.
There are six major climatic controls. They are:
Latitude: As the earth is round, sunlight does not reach everywhere equally. The temperature decreases as we move from the equator to the poles.
Altitude: As we move from the surface of the earth to the higher altitudes, the temperature decreases.
Pressure and wind system: The pressure and wind system of any area depend on the latitude and altitude of that place. Thus, it influences the temperature accordingly.
Distance from the sea: Coastal regions are cooler as compared to interior regions. As the distance from the sea increases, its influence decreases and the people experience extreme weather conditions.
Ocean currents: Cold ocean currents flowing over a region will decrease the temperature of that area whereas warm currents will increase the temperature.
Relief features: Relief features are the barriers that block currents from entering the country. High mountains act as barriers for cold or hot winds.
An eccentric inventor attempts to levitate by first placing a large negative charge on himself and then putting a large positive charge on the ceiling of his workshop. Instead, while attempting to place a large negative charge on himself, his clothes fly off. Explain.
Answer:
shirt is little attached to the body, it can come off and fly away
Explanation:
In electrostatics, charges of different signs attract and charges of the same sign repel.
In this case, when a negative charge is placed on it, both the inventor and the shirt are charged, therefore there is a repulsive force, also there is an attraction between the positive charge of the roof attracts the negative charge, such as the shirt. of weak the two forces not greater than the resistance of the walk.
As the shirt is little attached to the body, it can come off and fly away
The school band is practicing their scales. As the pitch and frequency of the notes increases, what happens to the wavelength of the notes?
○ The wavelength increases.
○ The wavelength decreases then increases.
○ The wavelength stays the same.
○ The wavelength decreases.
Answer:B
Explanation:
Answer:
LETTER BTHE WAVELENGTH DECREASES THEN INCREASESExplanation:
PLEASE MARK ME AS BRAINLIEST AND FOLLOW MEHow might the rate of conduction be affected if the fiber absorbs moisture ?
Answer:
Moisture absorbed by fabric material in a humidity environment or liquid water ... Perspired moisture penetrating into the hydrophobic fiber can increase ... Moisture content within the porous insulating materials greatly affect thermal ... When the ambient humidity increase or decrease
Explanation:
What is the time required for sound to travel 1.75 km if the temp of the air is 20 C°?
Answer:
Explanation:
The 2 equations we need for this are
[tex]v=331.5+.606T[/tex] and
d = rt. First we need to find the velocity using the first equation, then we will plug it into the distance equation as the rate to find the time.
v = 331.5 + .606(20.0) I used 3 sig figs for the temp instead of the 1 found in 20.
v = 331.5 + 12.1 so
v = 343.6 m/s
Now, before we can find the time in seconds, we need to convert the distance to meters.
1.75 km = 1750 m:
1750 = 343.6t so
t = 5.09 seconds
3. Automobile companies often test the safety of cars by putting them through crash tests to observe the integrity of the passenger compartment. If 1100kg car is sent toward a cement wall with a speed of15 m/s, an impact force of 185,000 N stops the car, how long does it take before the car is brought to a stop?
Answer:
Time taken for car to stop = 0.89 seconds (Approx.)
Explanation:
Given:
Mass of car = 1100 kg
Speed of car = 15 m/s
Impact force = 185,000 N
Find:
Time taken for car to stop
Computation:
Change in momentum of car = M(v) - M(u)
Change in momentum of car = 1100(0) - 1100(15)
Change in momentum of car = -16,500
Time taken for car to stop = I Change in momentum of car I / Impact force
Time taken for car to stop = I-16,500I / 185,000
Time taken for car to stop = 0.89 seconds (Approx.)
The time it takes for the car to stop will be 0.89 sec. Due to the external resistive force, the car will stop after some time.
What is momentum?The momentum is defined as the product of mass and the velocity of the body. It is denoted by the letter P. It occurs due to the applied force. Its unit is Kg m/s².
The change in the momentum of the car is given as;
[tex]\rm \triangle P = m(V-U) \\\\ \triangle P = 1100(0-5) \\\\ \rm \triangle P =-16,500 Kgm/s[/tex]
The time taken for a car to stop will be;
[tex]I \triangle p= F\triangle t \\\\ \rm t = \frac{\triangle p }{F} \\\\ \rm t = \frac{|-16500|}{18500} \\\\ \rm t =0.89 \ sec[/tex]
Hence the time it takes for the car to stop is 0.89 sec.
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While driving on Fairway Drive, you see a pedestrian in the crosswalk, so you step on the brakes. If you decelerate at a rate of -2.4m/s2 and you were originally driving at a rate of 24 miles per hour (*hint convert to m/s), how long would it take you to come to a full stop. Please give your answer in seconds.
Answer question quick
Answer:
Yes , insulation has no role
الإجابة الصحيحة هي
كرة كتلتها g 200 مربوطة بنهاية خيط طوله m 1 تتحرك حركة دائرية منتظمة في مسار دائري افقي ، اذا كانت الكرة تدور دورتين في الثانية ، فإن مقدار قوة الشد في الخيط بوحدة النيوتن تقريبا
تساوي :
ا
اعتبر النسبة التقريبية تساوي 3.14
Answer:
what do you mean?
Explanation:
Answer:
un arabe
Explanation:
A kettle transfers 1,500 J of energy, 1,200 J to a thermal energy store in the water and 300 J to the air as sound. How efficient is the kettle?
Answer:
80%
Explanation:
Given data
The energy use is the 1200J transfered to the water
Total energy=1500J
Efficiency = Energy used/total enery
Efficiency= 1200/1500*100
Efficiency=0.8*100
Efficiency=80%
Hence the efficiency of the kettle is 80%