7. A swing with a beautiful seaview is hung from a tree branch that is found to obey Hooke's law so that when a 20-kg load (a person sits on the swing with a mass of 20-kg) the branch sags 10 cm. a) How much will the branch sag if a 40-kg mass gets on the swing. b). How much will the branch sag if a 60-kg mass gets on the swing.c). Draw a sketch of the branch, as the branch bends downward under the weight of the person, use force vectors to illustrate which portion of the branch is being compressed Top or Bottom and which portion is being stretched where IT

Q: A wire of resistance 5.0 ohm is connected to a battery whose emf O is 2.0 V and whose internal…

A: Given that: Resistance, R=5ΩEMF, ε= 2 VoltRi= 1ΩTime, t= 2 min. a) Energy transferred from the…

Q: Problem 22.47 8 of 10 A flat slab of nonconducting material has thickness 2d, which is small…

A: Gauss law- If an imaginary sphere is placed around a point charge with point charge of the…

Q: equipotential surfaces a

A: Given: Charge is q=2.96 μC Equipotential surface exist at a distance 1.83 m from given charge.…

Q: A cylinder of radius r and mass m is partially submerged to depth h in water (density Pw). T?…

A:

Q: The drawing shows a frictionless incline and pulley. The two blocks are connected by a wire (mass…

A: Tension in the string T =253.4 N

Q: The coordinates of an object moving in the xy plane vary with time according to the following…

A: The x-coordinate of the object, x=-3sinωt The y-coordinate of the object, y=4-3cosωt

Q: Fo card a particle is 7(t) = 4.0t²î – 3.03 + ort answer

A:

Q: A solid cylinder with a rotational inertia of (1/2)MR2 is released from rest and rolls without…

A:

Q: 10. A 2 kg ball falls freely from a height of 3 m. What is its kinetic energy in joules when it hits…

A: Given data:  Ball falls freely  Mass (m) = 2 kg Height (h) = 3 m Required: The kinetic energy of the…

Q: The particle is moving along a stright path such that its velocity at any time t is given by v = 24t…

A: Please note : As per answering guidelines I can answer the first three subparts of a…

Q: An infinite solenoid with radius a and n turns per unit length carries a current which increases…

A:

Q: A racing car has a what Jixtance will it cover in 12 secanls fter the strrte unisorm accele radion…

A: Given data :                Time   =   t               Acceleration  =   a              Initial…

Q: N vs. TIME graph below, click on the spot where the VELOCITY IS ZERO (the arrow will be placed where…

A: Introduction: When the body does not gets displaced with time, the velocity is said to be zero. So,…

Q: A box of mass 1 kg is slid along the floor. The initial speed of the box is 5.7 m/s and it comes to…

A: Given : Mass of box = 1 kg Initial speed =5.7 m/s Final speed = 0 m/s displacement = 9.7 m

Q: A mountain-bike has a mass of 12 kg approximately. Each wheel can be considered as a ring, each is…

A:

Q: What is the resulting wave pattern after the two pulses meet and then move apart? Choose 1 answer:…

A:

Q: a) Every year lightning kills numerous cows during a thunderstorm. But interestingly enough, the…

A: Death or injury may be caused from electrocution may be caused by lightning. Sudden…

Q: 1. The mass difference between two isotopes is sometimes just a neutron mass. The spectrometer…

A: Consider two isotopes of the lead (82) are Pb204 and Pb205. Here, Pb205 > Pb204 Let the mass of…

Q: Why do wet objects normally look darker than the same objects when dry?

A: When, the angle of incidence is greater than a certain limiting angle, in that case the complete…

Q: 1. Determine the charge on a typical fluorine (F) ion. (Hint: group 7, so it gains 1 electron: q. =…

A:

Q: DISCUSSION OF RESULT THE RESULTS WERE EASILY KQUIRED BECAUSE HOST oF TA WAS GIVEN ALpADY - USING…

A: (1) For the given data we used Newton's second law of motion and we derived acceleration of the…

Q: 2. a) (Assume the ropes and the pulley have negligible mass and that friction and air resistance can…

A: Both the masses are initially at rest, so their initial velocity will be zero. As the masses are…

Q: A thin film of glass (n = 1.66) of thickness 0.383 um is viewed under white light at near normal…

A:

Q: A soccer player kicks a soccer ball of mass 0.45 kg that is initially at rest. The player's foot is…

A:

Q: - of the inertial systems in Fi easure no net electromagnet

A: Explanation: The bulk modulus which relates to the velocity v as, B=ρv2

Q: What is the correct answer??

A: Given, An electric circuit with many voltage source and resistances

Q: 1. A 3 kg block is hung from a spring that is attached to the ceiling and the spring stretches by…

A: Mass attached to the block initially, m0=3kg Extension of spring, x=0.02m Let the spring constant of…

Q: From learnings of Newton's 2nd and 3rd law, what concepts could be derived for impulse and momentum?

A: According to Newton's second law the net force acting on an object can be written as, F=ma Here, m…

Q: Answer the following questions. Write you explanation on a separate sheet of paper. 1.is there a…

A:

Q: Mahamos is dragsing a box full of books HoM his office to his Car The box and bookks Hogether hove a…

A: Given data:  Weight (W) = 134 N Coefficient of static friction (μs) = 0.55 Required: The force…

Q: propellers on the turbine have a radius of 130 m? Assume a power coefficient of 0.4 for the turbine.…

A: Given data :  Wind blowing speed v = 5m/s  Turbine radius r = 130 m  Power coefficient Cp = 0.4

Q: A 1 B ● 2 3 D E The figure above shows four very thin parallel planes of charge with equal…

A:

Q: Which of the following statements are true? OTwo springs look alike but have different spring…

A: The correct answer is option B Two springs look alike but have different spring constants. If the…

Q: explain this

A: Given data :  Elarge = 2× Esmall  And equation for E* is given  To Find :  Exact relation between E*…

Q: Once the toilet is flushed the tank must fill back up. The toilet tank has a volume of 0.032 m3 and…

A: Volume of the tank V=0.032 m3, rate at which water enter the tank Q=0.00059 m3/s, velocity with…

Q: A (3 kg) block start from rest at the top of (30) incline and slides a distance of ( 2m) down the…

A: We need to draw the free body diagram, find the acceleration of the block and its speed after…

Q: 5. Calculate the average value of kinetic energy of an electron in 3s state of hydrogen atom. The…

A: The wave function of the 3s state of the hydrogen atom can be written as below,

Q: 4. a) Evaluate the neutron separation energy of Zr⁹¹ 402⁹1 40 90 Zr +n m(40Zr9¹)-90.905644u,…

A: (a)

Q: 4. A man arrives at the railroad station nearest his country ho me an hour and 5 minutes before the…

A: Draw the schematic diagram of motion.

Q: A ball is shot straight up into the air with initial velocity of 45 ft/sec. Assuming that the air…

A: Given data:  A ball is shot straight upward  Initial velocity (u) = 45 ft/s Air resistance is…

Q: Problem 3 For the thermodynamic function dB = relations? Indicate all valid options: A) (aG) E.J CdE…

A:

Q: In a partially evacuated container, the particle density of air at 273.15 K is level is 0.19*…

A:

Q: 10. a) State Archimedes' principle. Apply it to solve this problem: A toy boat with an iron weight…

A:

Q: described in Prob. 6.5? 6.7. A car travels at an average speed of 60 mi/h for 3 h and 20 in. What…

A:

Q: The blades of a wind turbine are 40 m in length and rotate at a maximum rotation rate of 13 rev/min.…

A: a) Write the expression for the moment of inertia of the rod. Write the expression for the angular…

Q: Question 7: In a one-dimensional LED screen shown below each frame (segment) is illuminated with 3…

A: Given: Time taken is 2 sec The blue travels in 2 secs is 5 cm Amplitude is 5 cm Wave velocity can be…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.