An athlete whose mass is 90.0 kg is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 490 N. He lifts the barbell a distance of 0.60 m in 1.6 s. Find the total force that his feet exert on the ground as he lifts the barbell.

Q: A straight wire carrying a 2.70-A current is placed in a uniform magnetic field of magnitude 0.292 T...

A: Magnitude of the magnetic force = I*L*B sin(theta)  Where theta is the angle between direction of ma...

Q: Problem 2: A 5.0 kg block starts at the bottom of a 30-degree incline ramp with an initial velocity ...

A:

Q: A car is moving around a circular track. At the beginning of a time interval it is moving at 100 km/...

A: Change in velocity = final velocity - initial velocity = v̅2 - v̅2 

Q: Point charges q1=10nC and q2=13nC are 6.0m apart. Point charge q2 is located at the origin at q1 is ...

A: Electric field due to point charge is given by E = kq/ r2

Q: A time plot of the voltages across an inductor (dashed), capacitor (dotted), and resistor (solid) of...

A:

Q: The two blocks shown start from rest. The horizontal plane and the pulley are frictionless, and the ...

A: Given:mass of block A, mA = 100 kgmass of block B, mB = 260 kgPulley and surface is frictionlessStri...

Q: 100°C when it is converted into steam at the same The increase in internal energy of 1kg of water at...

A: Internal energy is defined as the energy associated with the random, disordered motion of molecules....

Q: 4. Perform a ray trace to determine the image location for an object placed in front of the - shown ...

A:

Q: A U-tube contains liquid of unknown density. An oil of density 830 kg/m3 is poured into one arm of t...

A: Given that:- Density of oil=830kg/m^3

Q: A radio transmitter broadcasts 4.5 kW of power to a 3.2 m diameter ceceiver.    Calculate the maxim...

A:

Q: Consider a converging lens with focal length 27.5 cm. An object is located 44.9 cm from the lens. Fi...

A:

Q: A car is moving on a straight road 11 m/s. It is acceleration at 13 m/s² . What will be it's velocit...

A: Given data :                Acceleration  = a                  Time   =  t             Initial veloc...

Q: A carousel has a radius of 1.70 m and a moment of inertia of 118 kg m2. A girl of mass 42.5 kg is st...

A:

Q: The increase in internal energy of 1kg of water at 100°C when it is converted into steam at the same...

A: Mass of water m=1 kg, temperature T=100oC=373 K, pressure P=1 atm=101325 Pa, latent heat of vaporiza...

Q: A 1200 kg frictionless roller coaster starts from rest at a height of 16 m.  What is its kinetic ene...

A: In the presence of conservative forces the sum of potential energy and kinetic energy remains consta...

Q: What are the advantages of using a synchrotron to generate X-rays over a Copper sourse? A. It produc...

A: Option E is right ans.

Q: What is the use of segmental method in center of gravity, by using the same method determine the gra...

A: Once the center of gravity (COG), or center of mass, is determined for the body or group of segments...

Q: 4.2 PQ1 You are pouring a heavy syrup on your pancakes. As the syrup spreads over the pancake, would...

A: We are pouring heavy syrup on our pancakes. As the syrup spreads over the pancake, the thin film of ...

Q: A Physics 131 student is performing the Center of Mass of the Body lab using a force plate. The stud...

A:

Q: Mars has a mass of 6.46 x 10²3 kg and a radius of 3.39 × 10° m. a) Calculate the acceleration due to...

A: Given data:   Mass of Mars (M) = 6.46×1023 kg Radius (R) = 3.39×106 m Mass of the person (m) = 65 kg...

Q: A lead block is suspended by means of a string from the underside of a 8.50 kg block of wood of dens...

A:

Q: 1 message A 240 kg communications satellite orbits around Earth exactly once per day at a radius o...

A: The given satellite in the problem completes its orbit around the earth in a time of 1 day, so the p...

Q: proton (charge +e = 1.602 x 10 -19 C ) moves a distance d = 0.50 m in a straight line between points...

A:

Q: 30. President Rosales of Republic of Chingchong ordered the launch of missiles to Red Island 1200m a...

A:

Q: If a bus traveling at 16 m/s is subjected to a steady deceleration of 5 m/s? . How long will it take...

A: Given data :             Final velocity  =  v           Deceleration   =  a          Initial velocit...

Q: 8. Given a set of capacitors:7 nF, 6 nF, 5 nF, 4 uF, 3 pF and 10 µF, solve the following problems: a...

A:

Q: A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to...

A:

Q: An 814.5-kg mass is suspended from its body by a rope as shown in the figure and has an angle thetha...

A:

Q: he pendulum rod is 08 m. pondulum willl oscillate 53 times every minute (1 minute s0 s on upiter. Th...

A: Length=0.8m

Q: Ball A (ma = 0.800 kg) strikes ball B (mg = 0.800 kg) which is initially hanging from an inextensibl...

A: In this question we have to find the speed of the ball and the impulse exerted by ball A on ball B. ...

Q: Discuss the reason that the term centripetal is used and why it is accurate to say that an object is...

A: Say an object is moving with a constant speed v around a circle of radius r. We say that this object...

Q: In order to maximize power, most broadcast antenna have a length that is 1/4 of the wavelength of th...

A: The most efficient to the broad cast electromagnetic wave is                                       L...

Q: I. A 10.0 kg mass is acted on by the two forces: F = (3.0N)i + (2.0N)j and F, = (10.0N)i +(-7.0N)j a...

A:

Q: z> Find the difCerence (P.-P) for the below in pressure pipe System : IS em

A:

Q: An electron (m = 9.11 x 10-31 kg, q = -1.60 x 10-19 C) in a magnetic fi moves at 2780 m/s in a circl...

A: We have givenMass of electron, m=9.11×10-31 kgCharge on electron, q=-1.6×10-19 CVelocity of electron...

Q: Water flowing through a 3.0-cm-diameter pipe can fill a 400 L bathtub in 6.5 min. What is the speed ...

A:

Q: A stamp collector wants to magnify an image by 4.0 when the stamp is 3.5 cm from the lens. What foca...

A: Given Information:- Magnification of the image is m=4.0 Distance of the stamp from the lens is do=3....

Q: 47. Table Saw The blade on a table saw rotates at 3450 revolutions per minute. How much faster (in f...

A:

Q: Question: Find the current through each resistor in the following circuit if the components are a si...

A:

Q: 4. A parallel-plate capacitor in air has a plate separation of 1.35 cm and a plate area of 35.0 cm2....

A:

Q: A goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. Sup...

A:

Q: A üme plot of the voltages across an inductor (dashed), capacitor (dotted), and resistor (solid) of ...

A:

Q: In order to optimize power, most broadcast antenna have a length that is 1/4 of the wavelength of th...

A: length of antenna = 14 th of the wavelength of the electromagnetic wave   

Q: A tire has a pressure of 1.4 atm and 21 0C.  At the end of a long trip, the tire pressure increased ...

A:

Q: Sketch v, for each network of Fig. 2.161 for the input shown. Would it be a good approxima- tion to ...

A:

Q: A current of 1.5A flows through a conductor for 2.0s. What amount of charge passes through the condu...

A: We know thatQ=I×tHereQ=chargeI=Currentt=time

Q: A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque...

A:

Q: Consider a converging lens with focal length 8.94 cm. The distance between an object and a real imag...

A:

Q: A 2 ohm heater takes 5 amperes while submerged in 1400 grams of water contained in a vessel with a w...

A:

Q: A wire carrying 3.50 A of current passes through a 0.0425 T magnetic field that is 0.255 m long. The...

A: Given,   current in wire(I)=3.50A  length of the wire(L)= 0.255 m  magnetic field around it (B)= 0.0...

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: