A doctor leaves her house and walks along the sidewalk towards the hospital. After 3mins, it starts to rain and finds shelter before returning home. Her distance from her house as a function of time is show in the figure below. At what moment in time is her velocity constant and positive? A. t= 1min B. t= 5min C. t= 4min D. t= 7min

Q: Problem 5: A horizontal force of magnitude 19.9 N pushes a box along a horizontal floor at a constan...

A: Given value--- force = 19.9 N. constant speed = 6.99 m/s. We have to find--- power ?

Q: two charges of +q are 1cm apart. if one of the charges is replaced by a charge of -q, the magnitude ...

A:

Q: Unpolarized light is passed through an optical filter that is oriented in the vertical direction. Wh...

A:

Q: 1)This is an electric current driven magnet A. Permananet magnet B. Ferromagnet C. Natural Magnet...

A:

Q: An equipotential surface must be perpendicular to the electric field at certain points. TRUE or FALS...

A: Electric field is the area where the electrical force can be felt.

Q: The electric field at point U on the perpendicular bisector of the line joining charges +Q and -Q is...

A:

Q: How do electric field vectors, or field lines, relate to the equipotential lines? Draw and label the...

A: Equipotential lines at which electric potential remains same at each point.  Work done = q (Vf - VI ...

Q: When a fixed amount of ideal gas goes through an isothermic expansion, A) the gas does no work. B)...

A: In isothermal expansion temperature is always constant 

Q: What is the angle between the following vectors? A=-2î + 3) B = 31 - 4)

A:

Q: According to the station model shown here, the type of precipitation is: 72 1010.2

A:

Q: Part (b) Write an expression for the magnitude of the change in the car's height, h, along the y-dir...

A: Solution:-

Q: A 55 kg woman balances on one of the heels of her shoes, if the heel is circular with a radius of 0....

A:

Q: roblem 2: A horizontal force keeps a 3.71 kg box traveling at a constant speed up a frictionless inc...

A:

Q: Fint Densty of object okg which occupies speice of o.5 m? p of mas 8 4n0 g0okg

A: Given data :                        Mass  =  m                        Volume  =  v              To f...

Q: If you repeat the same measurement several times in the same way, and each measurement gives a sligh...

A: The mean is very easy to determine. It shows the dispersion of many measurements from its central va...

Q: A so

A:

Q: 1) What acts as an opposition to the motion of current which results in generating heat? A. resista...

A:

Q: object with a net charge of -1.68 coulombs is moved vertically near the earth's surface where the gr...

A: Given  Electric field E = 92 N/C  Gravitational field = 9.81 N/kg  Stored electric potential energy ...

Q: 4. Sue whirls a yo-yo above her head in a horizontal circle. The yo-yo has a mass of 0.20 kg and is ...

A: For circular motion object required centripetal force which provided by tension in the string.

Q: 1. An object rotating according to the function 0 = t³ + t, find the instantaneous velocity and acce...

A:

Q: In the figure here, a ball is thrown up onto a roof, landing 3.90 s later at height h = 18.0 m above...

A:

Q: 6. A delivery clerk carries a 34 newton package from the ground to the fifth floor of an office buil...

A: 6) Weight of package (w) = 34 N total height of fifth floor from ground (h)= 15 m   

Q: In the effort to discover exoplanets a planet around another star was discovered that has a period o...

A: Given: T=320 days =320*24*60*60 = 2.76*107sec M = mass of sun = 1.99*1030 kg

Q: How LONG will it take a ship traveling at a constant velocity of 100 m/s to travel 800 meters?   a....

A:

Q: Calculate the wavelength associated with an electron (9.11 x 10^(-31) kg) moving at 52 m/s. Kindly ...

A: Given  Mass m = 9.11× 10-31 kg  Speed v = 52 m/s  Planks constant h = 6.6 × 10-34 Js 

Q: A tank in the shape of an inverted right circular cone has height 5 meters and radius 2 meters. It i...

A: GivenA tank in the shape of an inverted right circular cone Height, h=5 mRadius , r=2 mTank is fille...

Q: What net force is needed to accelerate a 10-kg mass at the rate of 40 m/s2 (neglect all friction): (...

A: Given data: The mass of the object is m=10 kg. The acceleration of the mass is a=40 m/s2.

Q: a) Write an equation for the currents entering in/out of the top junction in Figure 1. Use I1 as the...

A:

Q: 8.0 cm Consider the following (washing machine) 100-turn loop. The current running through it is I=5...

A: Since you have posted a question with multiple sub-parts, as per our guidelines we will solve first ...

Q: What are the rules of ray diagramming in lenses? (concave and convex)

A: Convex lens is converging lens while concave lens is diverging lens.

Q: A N-turn loop is placed in a magnetic field and the surface of the loop makes an angle '0' with the ...

A:

Q: struction: Help me answer the problem question and write it on paper with a complete solution and...

A:

Q: Problem 6: A bowling ball of mass m = 1.4 kg is launched from a spring compressed by a distance d= 0...

A: Given  Mass of ball= 1.4 kg Distance d = 0.34 m Angle θ = 450  HMax    = 4.3 m  To find out Spring c...

Q: The electric force between two charges in space is * directly proportional to the magnitude of...

A:

Q: The 5.6-kN force Fis applied at point A. (a) Compute the moment of F about point O, expressing it bo...

A:

Q: Explain in your own understanding  why Semiconductors are Negative Temperature Coefficient materials...

A: To describe: Semiconductors have negative temperature coefficient for resistance.

Q: SAMPLE PROBLEM 7: Ballistic pendulum The bullet, of mass m, is fired into a block of wood with mass ...

A: Apply the energy conservation equation between the lowest point and the highest point of the bullet+...

Q: 10. Use the formulas a = v2/r and v = 2πr/T to derive the following formulas: (a) centripetal accele...

A: Givna=v2r andv=2πrT

Q: 1. For a fixed amount of gas, i. if the volume of the gas is doubled, what happens to the pressure o...

A:

Q: Part (b) After the block comes to rest, the spring pushes the block back up the ramp. How fast, in m...

A:

Q: 11. An airplane passenger carries a 215 newton suitcase up stairs, a displacement of 4.20 meters ver...

A: Work done is given by dot product of force and displacement.  Since, force is acting upwards. Horizo...

Q: The Wheel of Fortune is divided into twelve angular sections, each of which is 30 degrees Determine ...

A:

Q: 5. Two blocks of masses mand 3m QIC are placed on a frictionless, hor- V izontal surface. A light sp...

A: As per our policies, we can answer only upto maximum of 3 sub-parts in one question. Please post oth...

Q: Does a charge distribution’s field have an effect on a charged particle travelling along one of its ...

A: Equipotential: A region whose every point has the equal potential. Static equilibrium: the physical ...

Q: a positive charge, q1=+8.0 nC is at the origin, and a second positive charge q2 = +12nC is on the x ...

A: Consider the given data as below. A positive charge, q1=+8.0 nC=+8.0×10-9 C At distance, x1=0 m A po...

Q: Find the resistance if the current is 3.5 amperes and the voltage is 35-V

A: Given data :                        Voltage  =  V                        Current  =   i             ...

Q: Using Kirchhoff's rules, find the following. (E, = 71.0 V, E, = 61.0 V, and E, = 79.0 V.) 4.00 kN d ...

A:

Q: M. A spaceship's orbital maneuver requires a speed increase of 1.10 x 10 m/s. If its engine has an e...

A: Given value--- speed increment = 1.10 × 103 m/s. Exhaust speed =2.15 × 103 m/s. We have to find---...

Q: Emily drives 400 meters up a hill that makes an angle of 20° with the horizontal. To the nearest ten...

A: GivenDistance travelled by Emily up a hill=400 mAngle ,θ=20°

Q: A father pulls his child on a sled by pulling on a rope over his shoulder with a force as much as 70...

A:

Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –