A string can withstand a maximum tension of 80 N without breaking. It is being used to spin a 3.0 kg weight in a circle. a) How fast can it spin without breaking if the stringis 0.75 meters long? b) If he pulls in some of the string and spins the weight in a smaller circle, will he be able to spin the weight faster? Explain why of why not?

Q: Part A A "moving sidewalk" in an airport terminal building moves at a speed of 1.4 m/s and is of len...

A: length (L) = 33 m speed of sidewalk = 1.4 msspeed of woman = 1.9 ms  

Q: Circular Motion: Please answer vertically. Thank You. A penny is put on a turntable 0.4 meters from...

A:

Q: A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the i...

A:

Q: Copper wire has a resistivity ρ = 1.7 × 10-8 Ω⋅m when at 20°C and it has a temperature coefficient α...

A:

Q: The surface of a sphere of radius R emits So photons isotropically towards the center of the sphere....

A:

Q: 1. Why does the voltage across the resistor for charging and discharging processes change the sign f...

A:

Q: How much power is needed to lift a 75-kg student vertically upward at a constant speed of 0.33 m/s? ...

A:

Q: The x and y components of a displacement vector are -3.00 m and +4.00 m, respectively. What angle do...

A:

Q: 11 FR at q, = ? %3D 0.20 m 0.15 m 43 92 +3.0HC -7.0 µC -4.0 µC

A: Draw the free-body diagram of the system.  

Q: A baseball is thrown at an angle of 40.0° above the horizontal. The horizontal component of the base...

A:

Q: A convex mirror has a focal length of –29 cm. What is the object distance if the image distance is –...

A:

Q: An alpha particle (consisting of two protons and two neutrons), traveling at a speed of v = 1.4 x 10...

A: Given value--- speed = 1.4 × 105 m/s. magnetic field = 1.8 T. We have to find--- Part (b)  In uni...

Q: In the following sketch, what is the net force acting on the box?

A:

Q: 6. . A force F of magnitude 6.00 units acts on an object at the ori- gin in a direction 0 30.0° abov...

A: Component of F1 along x-axis = F1cos30 = 6×√3/2 = 3√3 N . Component of F1 along y axis = F1 sin30 = ...

Q: The internal energy of a system increases by 1350 J when the system absorbs 1150 J of heat energy at...

A: Given Change in internal energy, ∆u=1350 J Heat absorbed by system , ∆q= 1150 J Constant pressure, P...

Q: Can you transform work to KE? If yes, how? If no, why?

A: Given: Can you transform work to KE? If yes, how? If no, why?

Q: Two charges of opposite sign and equal magnitude Q = 9.4 µC are held 2.0 m apart as shown in the fig...

A:

Q: Question 14 A displacement vector is 23 km in length and directed 65° south of east. What are the co...

A:

Q: Question 6* A sprinter in a 100m race accelerates uniformly for the first 35 m and then runs with co...

A:

Q: The diagram below presents the position and elapsed time of a motorbike that starts from rest and ac...

A: We know thatAverage velocity=Total displacementTotal time

Q: 3. A winch has a moment of inertia of 10.0 kg-m?. Two masses m, = 5kgs and m, = 2kgs are attached to...

A:

Q: How Are Gases Liquids And Solids Different From Other?

A: How Are Gases Liquids And Solids Different From Other? 

Q: 17 An object of mass m is lifted a vertical distance h above the surface of Earth at constant speed ...

A:

Q: Express the vector field in terms of its cylindrical components and variables D = yax

A: We need to convert given vector into cylindrical coordinates for which we need to use conversion mat...

Q: What is the charge that provides an electric field of 5 N/C over an area of 1m2?

A: Write the expression for the electric field. Here, q represents the charge, A represents the area, ...

Q: If water is cooled from 130 O F to -10 O F, what is the temperature change on the (a) Fahrenheit sca...

A:

Q: A block is pulled along a rough level surface at constant speed by the force P. The figure shows the...

A:

Q: A certain strain of bacteria will divide itself from 1 to 2 every to [minute]. As a result, its popu...

A: Given: Population model The table is  Initial population No = 100   Asked: to find to in minutes

Q: In the system of connected blocks shown in the figure, the coefficient of friction under blocks B an...

A:

Q: A 1000 kg car travels around a circular track at a constant speed. a. Draw the free-body diagram for...

A:

Q: A ball is thrown straight up from point A, reaches a maximum height at point B, and then falls back ...

A:

Q: What frequency is observed by a stationary pedestrian when a police siren (1200 Hz) recedes at 66 ft...

A:

Q: Question 24 A system of two cables supports a 150-N ball as shown. 30° 150 N What is the tension in ...

A:

Q: A pendulum of length L = 0.61m and mass 4.8Kg has a spring of force constant k =610 N/m connected to...

A:

Q: Your physics book is at rest on a table as shown. What is the Newton's 3rd law pair with the Normal ...

A: Newton's third law states that for every action, there is an equal and opposite reaction. Normal for...

Q: During a bout with the flu an 980-kg man ran a fever of 39.0° C instead of the normal body temperatu...

A:

Q: zero? Three point charges are arranged along the -axis. Charge q1 = +3.00 µC is at the origin, and c...

A:

Q: roller-coaster car is moving at 20 m/s along a traight horizontal track. What will its speed be afte...

A:

Q: Direction: Answer the following questions. 1. A charge of 4.50 x 10-8 C is placed in a uniform elect...

A:

Q: What is the difference between the size of the images created with a convex vs. a concave mirror?

A: Convex Mirror The inner surface is polished and the outer surface is reflective It is also called d...

Q: A trough is 4 m long, 5 m wide, and 2 m deep. The vertical cross-section of the trough parallel to a...

A:

Q: Introduction of capacitors

A:

Q: Diagram the forces acting on the crate.: B.) Pulling a crate at an angle A.) Pulling a crate 30°

A: (A) Here, mainly 4 forces acting on the system. (1) Weight of crate ( downwards)  (2) Normal reactio...

Q: the brushes. When superconducting coils are used to the disk is 0.400 m. Find the emf generated betw...

A: We need to find emf generated between the brushes .  We know that emf is given by rate of change of ...

Q: A velocity selector is an apparatus where crossed magnetic and electric fields allow for the precise...

A:

Q: A rock, released at rest from the top of a tower, hits the ground after 1.5 s. What is the speed of ...

A: When the rock is released from the top of the tower, its potential energy  is converted to kinetic e...

Q: Suppose that à = 2i + j, B =i– 4j + k, and Ĉ = j+,k• What is the magnitude of the vector 2A – B + Ć ...

A: Given Data:- The vectors are given as  A→=2i^+j^ B→=i^-4j^+k^ C→=j^+k^ Required:- We need to calcula...

Q: A 60 kg student rides on a roller coaster that makes a vertical loop. a. Draw a free-body diagram fo...

A:

Q: Determine the magnitude of the net magnetic field at a point 1 m to the side of one wire and 3.0 m f...

A:

Q: A platinum bar increases in length by 0.1% when its temperature increases to 111°C. Draw the figure ...

A:

Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.