14) A 15-kg child is sitting on a playground teeter-totter, 1.5 m from the pivot. What is the magnitude of the minimum force, applied 0.30 m on the other side of the pivot, that is needed make the child lift off the ground? A) 75 N B) 740 N

Q: Show your work on a separate document. Block or highlight your answers. 1. Refer to figure 1. A mass…

A: for equilibrium forces must be equal and opposite

Q: 21) Rotational Dynamics: The drive chain in a bicycle is applying a torque of 0.850 N m to the wheel…

A: Given:Torque(ζ)=0.850N.mMoment of Inertia(I)=0.100kg.m2

Q: Three polarizing plates whose planes are parallel are centered on a common axis. The directions of…

A:

Q: Which of the following is correct? None of the listed choices are correct. Radio waves have higher…

A: Gamma rays have higher frequency than infrared waves.

Q: 7. What percentage of the acceleration at Earth's surface is the acceleration due to gravity at the…

A: Given data: The height of above Earth's surface is h=300 km.

Q: 108 T. Assuming value= 9.28×10-24 J/T and The measured surface magnetic field strength of a neutron…

A: Given: The magnetic field strength of a neutron star is 108 T. The magnetic moment of the electron…

Q: Frank Lemming steps off the cliff with a herd of his fellow lemmings. If Frank free falls for 3…

A: As per the given data, Time (t) = 3 s; Acceleration (a) = 9.8 m/s2 (For free fall); Initial velocity…

Q: a. What is the speed of the combined mass system after the collision?

A: Conservation of linear momentum According to the conservation of linear momentum, for a system where…

Q: 2.Two vehicles are traveling in opposite directions and are involved in a head on collision. Vehicle…

A: Given data: Mass of first vehicle, m1 = 1500 kg  Mass of second vehicle, m2 = 4500 kg  The velocity…

Q: B A coin sits on a rotating turntable as shown in the figure. At the time shown in the figure, which…

A: We need to say what the direction of friction will be on the coin on turntable.

Q: a. A fan cart, with frictionless wheels and negligible air resistance is placed on a level surface…

A: (a) Explanation: The force applied on the cart is constant therefore the acceleration on the cart is…

Q: At he center of the rope, a 7.9-kg ball is hung as shown. What is the tension in the rope if the…

A:

Q: 19) Torque: A man in a gym is holding an 8.0-kg weight at arm's length, a distance of 0.55 m from…

A:

Q: Which of the following correctly lists electromagnetic waves in order from shortest to longest…

A: The electromagnetic spectrum is written as  Radiowave ( 103 m ) , Microwave ( 10-2 m ) , Infrared (…

Q: 7) The figure below shows a conical pendulum. It consists of a bob is suspended at the end of a…

A:

Q: A large object consists of two, flat steel plates that are welded together. The top plate has a mass…

A: Given Data : The mass of the top plate is given as m1 = 1.5 Kg. The mass of the bottom plate is…

Q: A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an…

A: there are three equation of motion  v = u +at  v2 -u2 = 2as  s = ut + 0.5at2 here  v = final…

Q: 73) Uniform Circular Motion: A 2.0-kg ball is moving with a constant speed of 5.0 m/s in a…

A: Mass of a ball (m) = 2 kg Speed (v) = 5 m/s Diameter (d) = 1 m Radius (r) = d/2 = 1/2 = 0.5 m

Q: Momentum Practice Techniques Do the following problem in at least one of these two ways. Pick the…

A:

Q: 58) Newton's Second Law in 2 Dimensions: A 1000-kg barge is being towed by means of two horizontal…

A: Given information: The mass of the barge (m) = 1000 kg The force applied on the barge (F) = 80.0 N…

Q: 7. A tennis ball (hollow sphere)is released from rest at h = 3R, where R = 1.0 m is the radius of…

A: Given, Initial height,h=3R=3(1)=3 m Height of point P,H=R=1 m Mass of ball, m=1 kg

Q: An 8-kg mass is attached to a spring hanging from the ceiling, thereby causing the spring to stretch…

A: Given that:m=8 kgy¯=80 cm=0.80 my(0)=-6 cmv(0)=0   (Mass is released)F(t)=0.2cost Nb=5 N-sec/m

Q: Four people are pulling in different directions on a shopping cart. The magnitude of their pulling…

A:

Q: 007 10.0 points A 0.280 kg block on a vertical spring with a spring constant of 4.97 × 103 downward,…

A:

Q: A vehicle is being driven on a distant planet, where the acceleration due to gravity is 7.22 m/s?.…

A: Given data The acceleration due to gravity is taken as g = 7.22 m/s2 The vehicle's mass is: m = 2000…

Q: 1. A cylinder with outer radius, router is 1.8 meters is supported by a fixed axel as shown below.…

A: Since you have posted a question with multiple sub-parts , we will solve first three sub-parts for…

Q: 3. In a series RC circuit with R = 5.00 kN, C = 2.00 µF, and v = 170 sin (300t), where is in volts.…

A:

Q: What size capacitor should be placed in series with a 30-2 resistor and a 40-mH inductive coil if…

A:

Q: onsider the figure below. (Let w, = 105 N and w, = 50.5 N.) W2 (a) What is the minimum force of…

A:

Q: 3. Verify if these are correct equations checking the units (dimensional analysis) F = mv? / x v2 =…

A: 3. a F=mv2x F=force, Unit of force is Newton 1N=kgm/s2 dimension of force =[MLT-2] m=mass(kg)…

Q: 28. IP In a tennis match, a player wins a point by hitting the ball sharply to the ground on the…

A:

Q: The position function of the object is defined as S(t) = -4.9t +120f, where s(t) is measured in…

A:

Q: Two charges separated by 3 meters exert 18-N forces on each other. If the charges are pushed to…

A:

Q: The magnetosphere of the Earth may be characterized by an electron number density n.=1011 m³ a…

A: Given: Electron number density ne = 1011 m-3. Temperature of magnetosphere T = 1100 K. Time between…

Q: What force must be applied to the end of a rod along the x -axis of length 3.5 m in order to produce…

A:

Q: Blood contains charges and these charges are free to move. Moreover, The membranes of all the…

A: R1 = 836 ohmR2 = 306 ohm C = 460 μF

Q: The figure below shows three stars rotating in circular path. They have equal mas m (they form an…

A:

Q: Objects of masses m, = 4.00 kg and mn, = 9.00 kg are connected by a light string that passes over a…

A: Using the kinematic equation for the motion of m2 d=vit+12at2d=0+12at2a=2dt2Inserting…

Q: In one contest at the county fair, a spring-loaded plunger launches a ball at a speed of Vo = 3.0…

A: Given:-  The lunch speed of the ball is u = 3.0 m/s  The flat board that is tilted up at a 20o angle…

Q: 5) Let's use this expression to solve a problem. Star X and Star Y are intrinsically identical…

A: Given, star X is located 20 light-years from earth star Y is located 40 light-years  from earth…

Q: 6. Jupiter's magnetic field occupies a volume of space larger than the Sun and contains ionized…

A: Solution:   a) The maximum magnetic force on the ion from Jupiter's magnetic field is calculated as:…

Q: When a system is taken from state i to state f along path iaf in the figure, Q = 50.2 cal and W = 2…

A: From the state i to f along the path iaf  The Q = 50.2 cal  W = 20.6 cal  Along the path Ibf  Q =…

Q: On a level road the stopping distance for a certain car traveling at 80 km/hr due to friction is 32…

A:

Q: A bike (including wheels) and rider have a combined mass of 68.5 kg and the two wheels of the bike…

A:

Q: (a) Complete the table below i.e.: complete and calculate all missing values. Spring displacement…

A: The following are the formulas which used for the calculations :  (n=6)

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.