Answer:
\(a_x=34.64\ m.\)
Explanation:
Rectangular components of a vector
Given a vector \(\vec a\), the x-component and y-component of the vector are given respectively by:
\(a_x=|\vec a|.\cos\theta\)
\(a_y=|\vec a|.\sin\theta\)
Where \(\theta\) is the angle measured with respect to the positive horizontal direction.
Let's calculate the horizontal component of a vector with magnitude 40 m and angle 330°
\(a_x=40\ m.\cos330^\circ\)
\(\boxed{a_x=34.64\ m.}\)
Dos fuerzas que actúan sobre una caja son 80 N norte y 40 N sur. Si la caja pesa 20 kg, ¿cuál es la aceleración de la caja?
The value of the acceleration of the box is 2 m/s².
The two forces acting on a box are 80 N north and 40 N south. If the box weighs 20 kg, the acceleration of the box can be calculated using Newton's second law.
Newton's second law states that the net force (F) acting on an object is equal to the product of its mass (m) and its acceleration (a):F = m × a
To calculate the acceleration of the box, we must first find the net force acting on the box.
To do this, we must add the two given forces: 80 N to the north - 40 N to the south = 40 N to the north
The net force is 40 N to the north. Now we can use Newton's second law:
F = m × a40 N north = 20 kg × a
Dividing both sides by 20 kg:
a = 2 m/s²
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a belt is placed around a pulley 41 cm in diameter and rotating at 242 rpm, what is the linear speed in m/s of the belt
Given
d: diameter
d = 41 cm
We need radius information so we will calculate it:
r: radius
r = d/2
r = 41/2
r = 20.5 cm
Rotating speed
w = 242 rpm
Procedure
At a distance r from the center of the rotation, a point on the object has a linear speed equal to the angular speed multiplied by the distance r. The units of linear speed are meters per second, m/s.
\(v=\omega r\)But before using the formula we need to have all the units in the same system. So we need to go from rpm to rad/s and from cm to m
\(\begin{gathered} 242\cdot\frac{\text{rev}}{\min}\cdot\frac{2\text{ pi rad }}{1\text{ rev}}\cdot\frac{1\text{ min}}{60\text{ s}} \\ 25.34\text{ rad/s} \\ \\ 20.5\text{ cm}\cdot\frac{1m}{100\operatorname{cm}} \\ 0.205\text{ m} \end{gathered}\)Now we can calculate the linear velocity of the belt.
\(\begin{gathered} v=\omega r \\ v=25.34\text{ rad/s}\cdot0.205\text{ m} \\ v=5.1947\text{ m/s} \end{gathered}\)Answer
The linear velocity of the belt would be 5.2 m/s.
walmart is kicking off its black friday sales early this year. starting the first week of november, the retailer will have three shopping events with deals on toys, electronics, apparel, home goods and other products both online and in stores. walmart leaked its own sales ahead of time, and we've spotted some of the bargains with lowest-to-date prices on devices, like the second-generation airpods for $89 starting nov. 10.here's how walmart is scheduling its sales this year:right now: some early deals are already available.nov. 3 (online) and nov. 5 (in stores): the first big batch of deals hit in early november (see below for details). members of the retailer's subscription delivery service, walmart plus, will get early access to discounts from 12 p.m. pt to 3 p.m. pt on nov. 3.nov. 10 (online) and nov. 12 (in stores): the second big sales event starts online on nov. 10 and in stores on nov. 12, with walmart plus members getting access to bargains from 12 p.m. pt to 3 p.m. pt on nov. 10.tbd: the third phase of walmart's november sales event has yet to be detailed.
The FitnessGram™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. [beep] A single lap should be completed each time you hear this sound. [ding] Remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.
how would you orient the magnetic field with respect to the direction of motion of the proton so that the proton undergoes cyclotron motion? make a sketch that illustrates this.
To make a proton undergo cyclotron motion, the magnetic field must be perpendicular to the direction of motion of the proton.
This is because the force on a charged particle moving in a magnetic field is given by the Lorentz force: F = q(v x B) where F is the force on the charged particle, q is the charge of the particle, v is the velocity of the particle, and B is the magnetic field. The direction of the force is perpendicular to both v and B, and is given by the right-hand rule. If the magnetic field is perpendicular to the direction of motion, the force will always be perpendicular to the velocity, which causes the proton to undergo circular motion in a plane perpendicular to the magnetic field. This is called cyclotron motion.
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The area of larger piston is 0. 05m2 a force of 100N is applied on the smaller piston. How much force force is produced produced on the larger piston
The force produced on the larger piston is 2500N.
The force exerted on a fluid in a closed system is transmitted equally in all directions, according to Pascal's Principle. In this case, the force of 100N applied on the smaller piston will be transmitted equally to the larger piston through the hydraulic fluid.
The ratio of the areas of the larger and smaller piston is 0.05m² / x m², where x is the area of the smaller piston. We can solve for x by setting the ratio equal to the force ratio:
0.05m² / x m² = F2 / F1where F1 is the force applied on the smaller piston (100N) and F2 is the force produced on the larger piston.
Solving for x, we get:
x = 0.0025m²Using the same equation and plugging in the values for F1, F2, and the areas of the pistons, we get:
0.05m² / 0.0025m² = F2 / 100NF2 = 2500NTherefore, the force produced on the larger piston is 2500N.''
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very dense material when heated will give off a ____ spectrum.
When very dense material is heated, it produces a continuous spectrum. A continuous spectrum is an electromagnetic radiation that displays a continuous range of wavelengths or colors.
The spectrum has no gaps or breaks and is seen as a smooth, unbroken band of colors that blend into each other.A continuous spectrum is created by solids, liquids, and dense gases when heated. The molecules in these materials begin to move around more quickly when they absorb thermal energy.
As a result of this motion, the electrons in the atoms within the material are excited to higher energy levels.This means that the electrons move from lower energy levels, which are closer to the atomic nucleus, to higher energy levels, which are further away from the nucleus. When the electrons transition back to their lower energy states, they release energy in the form of electromagnetic radiation.
The radiation that is released includes a continuous range of wavelengths, which produce a continuous spectrum.Continuous spectra are important in astronomy because they help scientists learn about the temperatures of the objects producing the radiation. By analyzing the spectrum, they can determine the temperature of the object.
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when connected to a mains of 250v,the fuse rating in the plug of an electric dence of 1kw in ampere is?
The fuse rating in the plug of the electric device should be 4 amperes.
What is ampere ?
An ampere can be defined as a unit of measure of the rate of electron flow or current in an electrical conductor.
To calculate the fuse rating in amperes for an electric device with a power rating of 1 kW connected to a mains voltage of 250 V, we can use the formula:
P = IV
Where
P is the power in wattsI is the current in amperesV is the voltage in voltsIn this case, we have P = 1000 W (since 1 kW = 1000 W) and V = 250 V. Solving for I, we get:
I = P/V = 1000 W / 250 V = 4 A
Therefore, the fuse rating in the plug of the electric device should be 4 amperes.
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6. Which Thanksgiving dish contains the most dietary fiber ? (Corn) (Mashed Potatoes) (Sweet Potatoes) (Pecan Pie)
Answer:
The correct option is;
Sweet Potatoes
Explanation:
The dietary fiber in Corn = 2.7 g per 100 g
The dietary fiber in Mashed Potatoes = 1.3 g per 100 g
The dietary fiber in Sweet Potatoes = 3 g per 100 g
The dietary fiber in Pecan Pie = 2.1 g per 100 g
Therefore, the Thanksgiving dish that contains the most dietary fiber per 100 g is Sweet Potatoes
A 1,725 kg car accelerates from 3.0 m/s for 4.4 s and reaches a velocity of 12.0 m/s. Ignoring friction, what is the applied force from the engine?
Given:
The mass of the car is m = 1725 kg
The initial velocity of the car is
\(v_i=\text{ 3 m/s}\)The final velocity of the car is
\(v_f=\text{ 12 m/s}\)The time is t = 4.4 s
To find the applied force.
Explanation:
The force can be calculated by the formula
\(F=\text{ ma}\)Here, a is the acceleration.
The acceleration can be calculated as
\(\begin{gathered} a=\frac{v_f-v_i}{t} \\ =\frac{12-3}{4.4} \\ =2.045\text{ m/s}^2 \end{gathered}\)On substituting the values, the force applied will be
\(\begin{gathered} F=ma \\ =1725\times2.045 \\ =3527.625\text{ N} \end{gathered}\)Thus, the applied force is 3527.625 N
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TIME REMAINING
01:57:39
A ball has a mass of 0.25 kg and is moving to the right at 1.0 m/s. It hits a ball of mass 0.15 kg that is initially at rest. After the collision, the 0.15 kg ball moves off to the right with a velocity of 0.75 m/s.
What is the final velocity of the 0.25 kg ball?
0.42 m/s to the right
0.42 m/s to the left
0.55 m/s to the right
0.55 m/s to the left
Answer:
C. 0.55 m/s towards the rightExplanation:
Using the conservation of law of momentum which states that the sum of momentum of bodies before collision is equal to the sum of the bodies after collision.
Momentum = Mass (M) * Velocity(V)
BEFORE COLLISION
Momentum of 0.25kg body moving at 1.0m/s = 0.25*1 = 0.25kgm/s
Momentum of 0.15kg body moving at 0.0m/s(body at rest) = 0kgm/s
AFTER COLLISION
Momentum of 0.25kg body moving at x m/s = 0.25* x= 0.25x kgm/s
x is the final velocity of the 0.25kg ball
Momentum of 0.15kg body moving at 0.75m/s(body at rest) =
0.15 * 0.75kgm/s = 0.1125 kgm/s
Using the law of conservation of momentum;
0.25+0 = 0.25x + 0.1125
0.25x = 0.25-0.1125
0.25x = 0.1375
x = 0.1375/0.25
x = 0.55m/s
Since the 0.15 kg ball moves off to the right after collision, the 0.25 kg ball will move at 0.55 m/s towards the right
please help me out with this.
To find the current in the resistor, we can use Ohm's Law and the concept of equivalent resistance. Thus, option A is correct.
First, let's calculate the equivalent resistance of the three cells connected in parallel. When resistors are connected in parallel, the reciprocal of the equivalent resistance is equal to the sum of the reciprocals of the individual resistances:
1/Req = 1/R1 + 1/R2 + 1/R3
Given that R1 = R2 = R3 = 22 Ω (internal resistance of each cell), we can substitute the values:
1/Req = 1/22 + 1/22 + 1/22
1/Req = 3/22
Taking the reciprocal of both sides, we find:
Req = 22/3 Ω
Now we can use Ohm's Law to calculate the current (I) in the resistor. Ohm's Law states that the current flowing through a resistor is equal to the voltage across it divided by its resistance:
I = V/R
Given that V = 1.1 V (emf of each cell) and R = 32 Ω (resistance), we can substitute the values:
I = 1.1/32
Calculating this value, we find:
I ≈ 0.034375 A
Therefore, the current in the resistor is approximately 0.034375 A.
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The electric field from a sheet of charge is perpendicular to the sheet and has a constant magnitude of Q/(Aeo), where A is the area of the sheet and Q is the charge on the sheet. If the sheet has an area, A=32.93 cm2, and a charge of 20.93 microC, what force, in nanoNewtons, would an electron experience due to this electric field?
The exercise tells us that the electric field is given by the following equation:
\(\vec{E}=\frac{Q}{A\epsilon_0}\)And it also gives us, A and Q. Thus, our electric field inside the capacitor is:
\(E=\frac{20.93*10^{-6}}{(32.93*10^{-4})*(8.85*10^{-12})}=718181521.8\frac{V}{m}\)As we know, the electric force can be written as:
\(F=q.E\)The charge of an electron is a constant, which is q=1.6*10^(-19) C.
Finally, our force can be written as:
\(F=1.6*10^{-19}*718181521.8=1.149*10^{-19}=0.00001149microN\)Our final answer is 0.00001149 micro Newtons
Can someone please help me with this project??? (Due tmrw afternoon)
Waves are periodic disturbances through a medium. How fast a wave can move through a medium only depends on a couple of things. One thing that determines the speed of a wave, is what type of wave it is. Sound travels at 340 m/sec in air, while light travels at nearly 3x108 m/sec in air. This experiment is going to look at what other factors determine the speed of a wave in a medium. To determine the speed of a wave pulse, record the time it takes for a pulse to travel then length to the clamp and back. Use the ruler to determine the distance between the pulse generator and the clamp, then double that for the total distance. If we can assume the wave travels at a constant speed, then v = d/t (total)
The assignment:
Part I: Amplitude versus Wave Speed
To determine the relationship between amplitude and wave speed, change the amplitude of the pulse and measure the speed of the wave.
Amplitude Distance Time Average Speed
1.
2.
3.
4.
5.
6.
Part II: Period versus Wave Speed
To determine the relationship between period and wave speed, change the pulse width and measure the speed of the wave. In this simulation, the pulse width is measured in seconds, which is the period of the pulse generator.
Pulse Width Distance Time Average Speed
1.
2.
3.
4.
5.
6.
Part III: Tension versus Wave Speed
To determine the relationship between tension in the chain and wave speed, change the tension and measure the speed of the wave. This time there is not numerical value for the tension so you will just use approximate descriptions.
Tension Distance Time Average Speed
High
Mid-point
Low
Questions
1. From your data, what factor(s) affect the speed of a wave? Explain your reasoning.
2. The pitch made by a musical instrument is dependent on the frequency of the wave. Frequency is the inverse of period. What impact do you think the frequency of a wave has on the wave speed?
3. What happens to wave speed as it moves from a medium of low density to one of high density? Explain your response with respect to this lab.
4. When a stringed instrument is out of tune, the player with tighten or loosen the string. If the instrument is initially flat, should they tighten or loosen the string? In the context of this experiment, explain your reasoning.
1. The data shows that amplitude, period, and tension all affect the speed of a wave. As amplitude and tension increase, the speed of the wave increases, while an increase in period results in a decrease in speed.
What is an amplitude?
Amplitude is the maximum displacement or distance moved by a wave from its resting position. In other words, it is the magnitude of the oscillation in a wave, or the height of a wave from its equilibrium position. In general, the greater the amplitude of a wave, the more energy it carries. In the context of sound waves, amplitude is associated with the loudness of the sound, while in the context of electromagnetic waves (such as light), it is associated with the brightness or intensity of the light.
2. The frequency of a wave has a direct relationship with the wave speed. As the frequency of a wave increases, the speed of the wave also increases.
3. Wave speed decreases as it moves from a medium of low density to one of high density. This is because a denser medium causes more resistance to the wave, resulting in a slower wave speed.
4. If the instrument is initially flat, the player should tighten the string. This is because tightening the string increases the tension, which in turn increases the speed of the wave, resulting in a higher pitch.
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an object is dropped from the top of a building which is 75 meters high. what's it's velocity before it reaches ground
Hi there! :)
\(\large\boxed{38.34 m/s}\)
Use the following kinematic equation to solve:
\(v_{f}^{2} = v_{i}^{2} + 2ad\)
Where:
vf = final velocity (?)
vi = initial velocity (0 m/s, object started at rest)
a = acceleration (gravity = 9.8 m/s)
d = distance travelled (75 m)
Plug in the given values into the equation:
\(v_{f}^{2} = 0^{2} + 2(9.8)(75)\)
Simplify:
\(v_{f}^{2} = 2(9.8)(75)\\\\v_{f}^{2} = 1470\)
Take the square root of both sides:
\(v_{f} = \sqrt{1470} = 38.34 m/s\)
the total or stagnation properties are those reached when a flow is brought to rest isentropically. in an incompressible flow, the total pressure is given by po = p + 1/2pV^2. show that , for a perfect gas, this expression reduce to po/p = 1 + γ/2 M^2 !
the expression for the total pressure reduces to
p_0 / p = 1 + γ/2 * \(M^2\),
The energy equation for a perfect gas in a steady, adiabatic flow is,
h + \((1/2)V^2\) = constant
The stagnation enthalpy can be expressed as:
h_0 = h + \((1/2)V^2\)
For a perfect gas, the specific enthalpy can be expressed as:
h = cpT
Where cp is the specific heat at constant pressure and T is the temperature. Therefore, we can write:
h_0 = cpT + \((1/2)V^2\)
The total pressure is related to the total enthalpy by the equation:
h_0 = (cp / γ) *\((p_0 / ρ)^γ\)
where p_0 is the total pressure, ρ is the density, and γ is the ratio of specific heats. Substituting for h_0 and simplifying, we get:
p_0 / p = (1 + γ/2 * \((V/a)^2)^(γ/(γ-1))\)
where a is the speed of sound in the fluid, given by:
a = \(sqrt(γp/ρ)\)
For an isentropic flow, we have:
p / \(ρ^γ\) = constant
Substituting for ρ from this equation and simplifying, we get:
p_0 / p = \((1 + γ/2 * (V/a)^2)^(1/(γ-1))\)
Using the definition of Mach number, M = V/a, we can write:
p_0 / p =\((1 + γ/2 * M^2)^(1/(γ-1))\)
Taking the γ-1 power of both sides, we get
\((p_0 / p)^(γ-1)\) = 1 + γ/2 * \(M^2\)
Substituting γ-1 for n, we get:
\((p_0 / p)^n\) = 1 + γ/2 * \(M^2\)
which is the desired expression:
p_0 / p = 1 + γ/2 * \(M^2\)
perfect gas,
p_0 / p = 1 + γ/2 * \(M^2\),
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PLEASE HELP An object takes 5.91 Earth years to orbit the Sun. What is its average distance from the Sun? Make sure to show ur work
a point charge q of mass 8.50 g hangs from the horizontal ceiling by a light 25.0-cm thread. when a horizontal electric field of magnitude 1750 n/c is turned on, the charge hangs away from the vertical as shown in the figure. the magnitude of q is closest to
Answer:
27.5μC
Explanation:
Given:
m=8.5*10^-3
E=1750N/C
Fg=9.8m/s^2
θ to vertical = 30°
Find:
Q
Fg=mg=8.5*10^-3 * 9.8 = 0.0833N
Tcos(30)=mg -> T=(mg)/cos(30) = 0.096N
Fe(force of electric field on charge) = Tsin(30) = 0.096sin(30) = 0.048N
E=F/Q -> Q=Fe/E = 0.048/1750 = 27.5μC
(see attachment)
We have that the the magnitude of charge Q is mathematically given as
Q=27.5uC
Magnitude of chargeQuestion Parameters:
a point charge q of mass 8.50 g hangs from the horizontal ceiling by a light 25.0-cm thread.
when a horizontal electric field of magnitude 1750 n/c is turned on
Generally the equation for the Tension is mathematically given as
For Horizontal Direction
\(Tsin \tTsin \theta=Q\theta=QE\)
For Vertical Direction
\(Tcos\theta=mg\)
\(tan\theta=\frac{QE}{mg}\)
Hence
\(Sin \theta=\frac{r}{e}\\\\\theta=sin^{-1}(12.5/25)=30\\\\And\\\\tan \theta=\frac{QE}{mg}\\\\\)
\(Q=\frac{mg+tan\theta}{E}\\\\Q=\frac{8.5e-3*9.8*tan \theta 30}{1750}\)
Q=27.5uC
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When serving you start on the right and must hit to which designated area?
- right side you are looking at
- left side you are looking
- any place over the net
(pickle ball)
you can serve to anyplace over the net
Explain Energy Transformation using the image below and how the Law of Conservation of Energy is maintained.
The chemical energy of petrol is converted to heat energy on combustion. The heat energy is converted to kinetic energy by the use of internal combustion engines in vehicles. The law of conservation of energy is maintained in each process.
What is kinetic energy?The kinetic energy of an object is associated with its motion. It can be related to the mass and velocity as
K.E = 1/2 mv²
Given is a diagram of energy conversion due to combustion.
The chemical energy of petrol is converted to heat energy on combustion. The heat energy is converted to kinetic energy by the use of internal combustion engines in vehicles.
The law of conservation of energy states that the energy can neither be created nor destroyed. It can be only converted to one form to the other.
In the given process, the mass decreases but energy remains the same in all forms of energy.
Hence, the law of conservation of energy is maintained in each process
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A simple pendulum 2.00 m long swings through a maximum angle of 30.0 ∘ with the vertical.(A)Calculate its period assuming a small amplitude.T = 2.84s(B)Calculate its period using the equation T=2πLg−−√(1+1222sin2Θ2+12⋅3222⋅42sin4Θ2+12⋅32⋅5222⋅42⋅62sin6Θ2).T = s
A simple pendulum 2.00 m long swings through a maximum angle of 30.0 ∘ with the vertical. Time is 2.75 s.
(A) The period of a simple pendulum can be calculated using the formula T = 2π√(L/g), where T represents the period, L is the length of the pendulum, and g is the acceleration due to gravity. In this case, the length of the pendulum is 2.00 m. Assuming a small amplitude, we can use the given maximum angle of 30.0 degrees as an approximation. By substituting these values into the formula, we can calculate the period:
T = 2π√(L/g)
T = 2π√(2.00 m/9.81 m/s^2)
T ≈ 2.84 s
(B) Another way to calculate the period of a simple pendulum is to use the equation T = 2π√[1 + (1/2)sin²(Θ/2) + (1/16)sin⁴(Θ/2) + (1/64)sin⁶(Θ/2)]. Here, Θ represents the maximum angle of the pendulum swing. By substituting Θ = 30.0 degrees into the equation, we can find the period:
T = 2π√[1 + (1/2)sin²(30.0/2) + (1/16)sin⁴(30.0/2) + (1/64)sin⁶(30.0/2)]
T ≈ 2.75 s
Please note that the second method provides a slightly different result due to the approximation used in the small-angle approximation formula.
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Identify the aspects of the pictured graph that are missing or contain errors.
Answer:
ooops ignore this it wont let me leave this screen it does this weirdly s
Explanation:
An organism that breaks down dead plants and animals, returning matter back into the soil, is called a
A.
herbivore.
B.
producer.
C.
competitor.
D.
decomposer.
Answer:
d. decomposer
Explanation:
they play a critical role in the flow of energythrough an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers
a 32-kg child decides to make a raft out of empty 1.0-l water bottles and duct tape. neglecting the mass of the duct tape and plastic in the bottles, what minimum number of water bottles will the child need to be able to stay dry on the raft?
Ignoring the mass of duct tape and plastic in the bottles, a child will need at least 4 water bottles to stay dry on the raft. The child will need at least four water bottles to stay dry on the raft.
The buoyancy force exerted by the water on the raft must be greater than or equal to the weight of the child to keep the child afloat and dry on the raft. The buoyancy force is given by Archimedes' principle, which states that it is equal to the weight of the water displaced by the raft.
The volume of each 1.0 L water bottle is 0.001 m^3. The density of water is approximately 1000 kg/m^3. Therefore, each water bottle has a buoyant force of:
Buoyant force = Volume of water displaced x Density of water x Acceleration due to gravity
Buoyant force = 0.001 m^3 x 1000 kg/m^3 x 9.81 m/s^2
Buoyant force = 9.81 N
To find the minimum number of water bottles needed to keep the child afloat, we need to divide the weight of the child by the buoyant force of one water bottle:
Minimum number of water bottles = Weight of child / Buoyant force per bottle
Minimum number of water bottles = 32 kg / 9.81 N
Minimum number of water bottles = 3.26 (rounded up to 4)
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1) A plane takes off from an O'Hare runway heading due west with a speed of 210.1 m/s. Once in the air, it encounters a north wind (blowing south) with a speed of 55.0 m/s. What is the magnitude of its velocity relative to the ground?
2) What is the direction of the resulting velocity (relative to its initial direction)?
Randy used to have poor health. Recently, he has lost a lot of weight and has started feeling much better, but he doesn't know which of his life changes contributed to the improvement. Which change most likely helped Randy get better health?
Answer:
Losing weight?
Explanation:
That would make sense because thats the only thing mentioned
Answer:
He started getting a full night of restful sleep.
Explanation:
hope 04.01 quizlet
What will happen to this current if a magnet is brought near the cord? A. It will exert a force on the voltage. B. The electric current will stop flowing. C. The resistance of the wire will decrease. D. It will exert a force on the electric current.
Answer:
The correct answer is D)
Explanation:
When an electric magnet is brought near a cord with an electric current, the cord will most likely deflect away from the magnet because electric fields flowing through a wire generates its own magnetic field.
Cheers!
Help!! Or I get an F!!!
What planet could you jump the highest?
Answer:
Is Mercury an answer on your thing?
Explanation:
Mercury has the least amount of gravity, so therefore you can jump the highest on Mercury.
Answer:
Jupiter
Explanation:
Jupiter has more than 300 time the mass as earth. so, it's gravitational pull is stronger.
Hopefully this helps
An object of mass 25 kg acted upon by a net force of 10 N will experience an acceleration of?
Answer:
0.4 m/s2
Explanation:
mass: 25kg
net force: 10 N
acceleration: ?
net force ÷ by mass= acceleration
10 N ÷ 25 Kg = 0.4 m/s2
Kiran runs along a straight road of length 150 m. After
reaching at end of the road he runs back to his initial
position along the same straight path. If he takes a total
time of 1 minute for completing his running, find the
average speed and average velocity of Kiran.
Answer:
Explanation:
Speed and velocity are not the same thing, as I'm sure you have determined while in physics. To find the average speed, we add the total distance run by Kiran and divide that total number of meters by the number of seconds it took to do this (just because I am going to state the speed and velocity in terms of m/s as opposed to m/min). To find the average velocity, we add the displacements together and divide by the total time. First the average speed:
\(s=\frac{150+150}{60}=\frac{300}{60}=5\frac{m}{s}\)
Velocity has direction. If Kiran runs to the end of the road (which we will call positive) and then runs back to the start (that direction will be negative), then his displacement fits into the velocity equation as
\(v=\frac{150+(-150)}{60}=0\) That means, even though he ran a lot and I'm sure he was very tired, his average velocity for the trip was 0 m/s. When velocity is 0, remember that that means that the total displacement was 0.
a proton is accelerated in a particle accelerator from rest through a potential difference of 0.540 kv. if the proton then passes through a uniform magnetic field of magnitude 0.490 t that is perpendicular to the proton's path, what is the radius of the path that the proton will take through the magnetic field? give your answer in cm. (the mass of a proton is 1.672*10^-27 kg.)
The required radius of the path of proton when potential difference, magnetic field strength are specified is calculated to be 4.099 × 10⁻³ m.
To calculate the radius of the followed path, let us use the formula for radius of trajectory of charge moving in constant magnetic field,
r = m v/qB
where,
r is radius
m is mass of proton
q is charge on proton
B is magnetic field
Mass of a proton is given as 1.672 × 10⁻²⁷ kg
Charge on proton is known to be 1.6 × 10⁻¹⁹ C
The magnitude of magnetic field is given as 0.490 T.
We should find out the velocity of proton first.
Mathematically, we can write,
q V = 1/2 m v²
where,
V is potential difference
v is velocity
By making velocity as subject, we have,
v = √(2 q V/m) = √(2 × 1.6 × 10⁻¹⁹ × 0.54 × 10³)/(1.672 × 10⁻²⁷) = √(1.728× 10⁻¹⁶)/(1.672 × 10⁻²⁷) = √(1.033 × 10¹¹) m/s = 3.214 × 10⁵ m/s
Now, let us find out radius,
r = m v/qB = (1.672 × 10⁻²⁷)(3.214 × 10⁵)/(1.6 × 10⁻¹⁹)(0.490) = 3.214 × 10⁻³)/(0.784) = 4.099 × 10⁻³ m
Thus, the required radius of the path of proton is calculated to be 4.099 × 10⁻³ m.
To know more about radius:
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