The position vector of a particle changes with time according to the relation 7(t) = 15t2 î + (4 – 20t2)ĵ. What is the magnitude of the acceleration at t = 1?
Q: A bakery works out a demand function for its chocolate chip cookies and finds it to be q = D(x) = 95...
A:
Q: A record for stair climbing was achieved by a man who raced up the 1600 steps of the Empire State Bu...
A: Given data from question, Number of steps = 1600 Height = 320m Time taken = 10.2min Weight of man =...
Q: A circular area with a radius of 5 cm lies in the xy-plane. What is the magnitude of the magnetic fl...
A:
Q: Suppose that a typical power plant produces about 10 billion kilowatt-hours (kWh) per year. To produ...
A: the power pwoduced by a power plant is 10 billion kWh per year. 1 billion = 109
Q: 5. A steam engine intakes 100 g of steam at 100°C per minute and cools it down to 20°C. Calculate th...
A:
Q: Give at least one advantage and one disadvantage for each of the two methods for adding vectors.
A: There are two methods of adding vectors they are 1) Graphical 2)Algebraic
Q: A 2000-kg pickup truck is moving at a speed of 40 m/s as its brakes are applied, and comes to a stop...
A:
Q: A 100.0 microcoulomb (uC) charge is placed at the origin. A 200.0 µC charge is placed 2.00 m above t...
A:
Q: The position of a particle along a straight line is given by s =( 1.84t3-15.25t2+22.5t ) ft, where t...
A:
Q: Two particles of equal mass 'm' go around a circle of radius R under the action of their mutual grav...
A:
Q: Answer the following problem with complete solutions. Write legibly A system containing an ideal ga...
A:
Q: Good day, Maam/Sir. I hope you can help me to my study. Thank you!! Topic: Sound and Hearing Probl...
A:
Q: A particle passes through a mass spectrometer as illustrated in the figure below. The electric field...
A: Here B1 means Bin qnd Bo=B2
Q: 1. A capacitor is composed of 2 plates separated by a sheet of insulating material 2mm thick and of ...
A:
Q: Light passes from air into ice with part of the ray reflected and part refracted. The reflected and ...
A: Given: medium 1 : air medium 2 : ice angle of incidence =i (say) angle of reflection = r (say) ang...
Q: A long solenoid that has 1,140 turns uniformly distributed over a length of 0.415 m produces a magne...
A:
Q: Q3) a) A ray of light in diamond incex of refraction 2.42 is incident of 53.2 on an interface with a...
A: to solve this problem we use snell's law of refraction and concept of critical angle n1sin(θ1)=n2sin...
Q: x-component 2a Find the x and y components for the vector shown that is 25 units long and 53.1 degre...
A:
Q: A woman takes her dog Rover for a walk on a leash. To get the little pooch moving forward, she pulls...
A: Only one question per one post as per the guidelines . please post other question again to get answe...
Q: Two resistors dissipate the same amount of power. The potential drop across resistors A is four time...
A: Two resistors dissipate the same amount of power. The potential drop across resistors A is four time...
Q: 1. Is there any ‘Voltage Law' for nodes? If so, what is it? 2. Is there any ‘Current Law' for meshes...
A: 1. Kirchhoff’s Voltage Law is the second of his fundamental laws we can use for circuit analysis. H...
Q: A truck flew off the freeway and crashed into the side of the Mission Valley Dave & Busters. When th...
A: Given: ux=10.7 m/suy=0 m/sh=15.2 m
Q: Why don’t stars live forever? Which stars live the longest? b) What is the importance of 1.4 solar m...
A: Answer:- 1. a) ▪︎stars cannot survive indefinitely Because the core temperature of a main sequence ...
Q: Oobtain The system matrix for The Thick lens and dvive The lens Formula for Thin Tens 2
A: The formula for refraction through spherical surface of radius (R) is given by n2v-n1u=n2-n1R Where ...
Q: at is the direction of the force on the wire if both are parallel to the ground? B) Calculate the ...
A: We are authorized to answer three subparts at a time, since you have not mentioned which part you ar...
Q: For the network of capacitors shown, find the (a) equivalent capacitance and (b total charge when co...
A: According to question we need to find equivalent capacitance total charge
Q: A 1.5 kg block and a 2.7 kg block are attached to opposite ends of a light rope. The rope hangs over...
A:
Q: TV channel 2 broadcasts in the frequency range 50 to 56 MHz. What is the corresponding range of wave...
A: Given that The frequency range of the TV channel is ...
Q: What is the minimum diameter (D) of the Cu wire so that AV < 1.5 V? Ocu = 6.07 x 107 (Ohm-m)1 -l = 1...
A:
Q: How do alpha particles, beta particles and gamma rays differ from each other: a) by mass b) by charg...
A: Given Differ alpha particles , beta particles and gamma rays
Q: The figure shows the distance versus time graph of an object. d = constant xt The acceleration of th...
A:
Q: A bullet of mass 20g has an initial speed of 1 ms-, just before it starts penetrating a mud wall of ...
A:
Q: You are working at a company that manufactures solenoids for industrial and research use. A dient ha...
A:
Q: A satellite is in a circular orbit around the Earth at an altitude of 1 000 km. The radius of the Ea...
A:
Q: 11. Place the polarizer sheets at an angle of 20, 40 and 60 degrees to the reference line. (solid bl...
A:
Q: If the electric field has zero net divergence, then the field must vanish everywhere. T or F
A: False.
Q: Initially a gas of diatomic molecules is contained in a cylinder of volume V at a pressure P and tem...
A:
Q: A p.d. of 10 V is needed to make a current of 0.02 A flow through a wire. What p.d. is needed to mak...
A: Given : V = 10 V I = 0.02 A I' = 250 mA = 0.250 A
Q: 1. A bowling ball has a mass of 5.5 kg and a radius of 12.0 cm. It is released so that it rolls ...
A:
Q: B: Find the total moment of force with respect to point (0), for the two forces in next fig. 4m 4m 2...
A: Given that:- Two forces are acting on a block is shown in the figure.
Q: A rod of mass m and radius R rests on two parallel rails (see figure below) that are a distance d ap...
A:
Q: a hydraulic piston with a face area of 2E-4m^2 is paired with another, larger, hydraulic piston. if ...
A:
Q: A) A body was hanged by a spring scale. If the scale reading is 30 N in the air, 20 N when immersed ...
A:
Q: 3 In the vector diagram, figure 1.24, find the resultant vector along the positive X-axis, for vecto...
A: we calculate the angle made by vector A with x axis =90-37=53 degree
Q: What is the minimum diameter (D) of the Cu wire so that AV < 1.5 V? Ocu = 6.07 x 107 (Ohm-m)1 e=D100...
A:
Q: While driving south on hwy 400, Jim gets stuck travelling at 1.9 m/s behind a slow truck. He finally...
A:
Q: Q2-A-Three masses are placed on the x-axis :100g at x-0;200g at x=20cm ;and 400g at x=70cm. Determin...
A: Given :- A) 100 g at x =0 cm , 200g at x= 20 cm, 400g at x= 70 cm. B) A = 3i+2j, B = i+5j
Q: A 34.1μF capacitor is connected to a 9.7 V, 187 Hz source. What is the capacitive reactance (in ohms...
A:
Q: al length of a lens that produces an inverted image six times the size of a small object placed on t...
A: We know that the lens formula is given as 1v+1u= 1f where v is the image distance u is the object ...
Q: A forklift does 1150 J of work to lift a crate straight up using a force of 500 N. How high does the...
A: Given Work done by forklift =1150 J Force applied by lift = 500 N We have to calculate How high does...
Step by step
Solved in 2 steps with 2 images
- An ion's position vector is initially r==(5i-6j+2k)m, and 10 s later it is r=(-2i+8j-2k)m.In unit-vector notation ,what is its Vavg during the 10s?A particle moves through 3-space in such a way that its acceleration is a(t)= 8sin 2ri +8cos 2tj+e'k . where t is time measured in seconds. The initial velocity of the particle is v, = 2i – 3j+k. At time t = t , find i) the velocity vector of the particle. ii) the scalar tangential and normal components of acceleration.A particle moving in the x-y plane has a position vector given by r- 1.67t2i+1.44t³j, where r is in inches and t is in seconds. Calculate the radius of curvature p of the path for the position of the particle when t- 1.9 sec. Sketch the velocity v and the curvature of the path for this particular instant. Answer:p-i in.
- Current Attempt in Progress L locates the paticle, which then has the velocity 4ti + 5t), where a is in meters per second- The acceleration of a particle moving only on a horizontal xy plane is given by a squared and t is in seconds. At t=0, the position vector 7= (20.0m)i + (39.0m) vector 7 = (5.10m/s)i + (2.70m/s). At t-3.70s, what are (a) its position vector in unit-vector notation and (b) the angle between its direction of travel and the positive direction of the x axis? (a) Number i (b) Number eTextbook and Media Save for Later Units Units Attempts: 0 of 8 used Submit Answer0, y 0) 44. A projectile is launched from the point (x QC with velocity (12.0î + 49.0 j) m/s, at t = 0. (a) Make a table listing the projectile's distance |r| from the ori- gin at the end of each second thereafter, for 0 s I S 10 s. Tabulating the x and y coordinates and the compo- nents of velocity v and v will also be useful. (b) Notice that the projectile's distance from its starting point increases with time, goes through a maximum, and starts to decrease. Prove that the distance is a maximum when the position vector is perpendicular to the veloc- ity. Suggestion: Argue that if v is not perpendicular to f, then r|must be increasing or decreasing. (c) Determine the magnitude of the maximum displacement. (d) ExplainA body moves in space , the location vector r = 2 2t i+tj +2 k m, How much the velocity of it at 2 second V = m/sec (aii 2 aic aïcrw za )?
- A particle moving in the x-y plane has a position vector given by r = 1.12t²i + 1.30t³j, where r is in inches and t is in seconds. Calculate the radius of curvature p of the path for the position of the particle when t = 2.5 sec. Sketch the velocity v and the curvature of the path for this particular instant. Answer: p= i eTextbook and Media in.The position vector of a particle is r(t). Find the requested vector. 1. The velocity at t = pi/4 for r(t) = 2sec2(t) i - 6tan(t) j + 4t2 k. 2. The acceleration at t = 3 for r(t) = (5t - 2t4) i + (9 - t) j + (8t2 - 9) k.In using polar coordinates to describe plane polar motion the velocity is expressed as: O v = rð e, + †0e, O v = r0e, + rðe, O v = rð e, + re, O v = r e, + r0e,
- An object on a horizontal plane has an initial velocity Vo = (6.01+3.05)m/s at & point where its position vector is r = (12.01+6.05)m gin. The object moves with constant acceleration and after t=7 s, its velocity becomes V = (-8.0t - 4.05m/s. What is its position vector at O26-145 O20f-105 O22f+165 O 181+125 O24f+ 185The position vector is r = (3t3 - 2t)i + (2t+1)j (above r,i,j has Vector symbol) Determine the velocity vector at t = 2.0s. Your answer should be in m/s.A person first takes one walk and then another, as described by two displacement vectors A and B: Ax = 2 m; A, = 4 m B = 5 m; B= - 3 m Find the angle, in degrees, of the sum of these two motion vectors (net displacement) relative to the х ахis. O 8.2 O 4.1 O 10 O 82 45