A brick is dropped (zero initial speed) from the roof of abuilding. The brick strikes the ground in 1.90 s. You may ignore airresistance, so the brick is in free fall. How tall, in meters, is the building?

Q: A 75.0 kg wrecking ball hangs from a uniform, heavy-duty chainof mass 26.0 kg. What is the tension a...

A: Given, Mass of the ball , mb=75 kg Mass of the chain, mc=26 kg The given question can be predicted i...

Q: In a naturally occurring sample, 19.8% of boron atoms have 5 neutrons and 80.2% have 6 neutrons. Wha...

A:

Q: Estimate the pressure of an ideal Fermi-Dirac gas of electrons at 0°K

A: Given: The equation of the pressure of the ideal Fermi-Dirac gas at the temperature of 0 K.  

Q: Material a is water and material b is glass with index of refraction 1.52. The incident ray makes an...

A: Given data: The refractive index of water is na=1.33. The refractive index of glass is nb=1.52. The...

Q: A box is sliding with a constant speed of 4.00 m>s inthe +x-direction on a horizontal, frictionle...

A: Case-1:- When the box is sliding at coordinates, 0≤x≤2.00 m Three forces act on the box:- Normal for...

Q: The electric field due to a charged circular disk of radius R and uniform charge density o along a p...

A:

Q: Does dust from the land/ground have a positive or negative radiative forcing?

A: dust on ground has negative radiative forcing  

Q: How to solve this problem

A:

Q: Insulator Metallic Shell An insulating sphere of radius 2 cm and charge -6 uC is surrounded by a sph...

A: According to Gauss's Law The net electric flux through a closed surface is directly proportional to ...

Q: A car has the same kinetic energy when it is traveling south at30 m/s as when it is traveling northw...

A: The main difference that posses a vector from a scalar is the direction. in this case, the kinetic e...

Q: An electromagnetic wave has an electric field given by E→ (y, t ) = (3.10 x 105 V/m) k̂ cos [ky - (1...

A: (a) The electric field is given by E→y,t=3.10×105V/mk^cosky-12.65×1012rad/st                      1 ...

Q: Predict the products of the following reaction. If no reaction will occur, use the NO REACTION butto...

A: Here the reaction is given in which Aluminium is to react with diluted Nitric acid.So Aluminium will...

Q: A circular racetrack has a radius of 500 m. What is the displacement of a bicyclist when she travels...

A: Displacement is the shortest distance between the initial and final points. Displacement while trave...

Q: A car’s velocity as a function of time is given by vx1t2 = a + bt2, where a = 3.00 m/s and b = 0.100...

A:

Q: Sketch the correct direction of the acceleration vector a⃗ a→ for the system shown in (Figure 1).   ...

A: Since the net force on the object is zero, the acceleration is also zero. Drag force always act oppo...

Q: Determine the tension developed in each wire which is needed to support the 40-lb flowerpot.(Figure ...

A: Given: W=40lb Free body diagram at the ring C: Where,TAC is a tension develop in wire AC TCD is a t...

Q: f a photon of wavelength 0.04250 nm strikes a free electron and is scattered at an angle of 35.0° fr...

A: Given Wavelength of photon = 0.04250 nm Angle                           = 35°

Q: Show that for an ideal Fermi-Dirac gas that (kT\ 4 57? (kT 1+ 12 2 2 Νμο P-5 V 16 \Ho)

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Q: Consider a simple pn-junction diode. Suppose this diode carries a current of 50 mA with a forward bi...

A:

Q: A thin layer of ice (n = 1.309) floats on the surface of water (n = 1.333) in a bucket. A ray of lig...

A: Part-a Given: The refractive index of ice nice = 1.309. The refractive index of water nw = 1.333.

Q: You are standing on a bathroom scale in an elevator in a tall building. Your mass is 64 kg. The elev...

A: The acceleration of the elevator is as follows: at=ddtvtat=ddt3.0 m/s2t+0.20 m/s3t2at=3.0 m/s2+0.40 ...

Q: A particle with mass m is in a one-dimensional box with width L. If the energy of the particle is (9...

A:

Q: solve only part  " d " &  " e "    do it quick please ill upvote it

A: (d) diagram

Q: Protons with momentum 4.8 x 10-21 kg. m/s are magnetically steered clockwise in a circular path 2.2 ...

A: The maximum force exerted on moving charge is,Fmax=qvB                                  (i)         ...

Q: . Consider the spring-mass system whose motion is governed by d'y dt2 + wy = Fo cos ot, y(0) = 0, dy...

A: If the system is resonating the angular frequency will become ω̥ ,  

Q: An electric lamp of mass 0.8 kg is attached by an electric cable to the ceiling at point A. The lamp...

A: Given     mass of the lamp, m = 0.8 kg    acceleration due to gravity, g = 9.8 m/s2 Free body diagra...

Q: A racetrack curve has radius 90.0 m and is banked at an angle of 18.0. The coefficient of static fr...

A:

Q: A person is lying on a diving board 3.00 m above the surface of the water in a swimming pool. She lo...

A: The distance from person to surface of water is 3.50 m, and penny appears at a distance 6 m. Accordi...

Q: The Sun on the right is shining on the four planets to the left. Each planet has an axis of rotation...

A: X on the planet with 90° tilt will have coldest winters. Option d.

Q: A ball is shot from ground level over level ground at a certain initial speed. The figure gives the ...

A: Given information: The variation of the range with respect to the angle of the projectile is given. ...

Q: How to solve this problem?

A: The problem can be done by Pythagoras theorem and trigonometric ratio.

Q: An electric hair dryer is rated at 1500 W (the average power) at 120 V (the rms voltage). Calculate ...

A: The average power is 1500 W, and the rms voltage is 120 V, (a) Hence the resistance of the electric ...

Q: You are to design a rotating cylindrical axle to lift 800 N buckets of cement from the ground to a r...

A: (a) The rope has wound the axle. The linear velocity of the bucket is equal to the linear velocity o...

Q: cx%3D+00 Using only the property f(a) = o f(x)8(x – a)dx as a definition of the Dirac delta, prove t...

A: (a) Given: f(a)=∫-∞+∞f(x)δ(x-a)dx Introduction: As a distribution, the Dirac delta function is a lin...

Q: A shortstop is running due east as he throws a baseball to the catcher, who is standing at home plat...

A: Analyze the figure below, In the above figure, vs denotes the velocity of shortstop relative to the...

Q: A box is sliding with aspeed of 4.50 m/s on a horizontal surface when, at point P, it encountersa ro...

A: Part (a) Given: The initial speed of box is u=4.50 m/s. The minimum value of coefficient of frictio...

Q: Show that the mean-square charge radius of a uniformly charged sphere is<r2> = 3R2/5 ?

A: Here,  We have to find the mean square charge radius of a uniformly charged sphere,  So 

Q: If a dipole p is located at distance D of an infinite grounded conductor plane and makes angle a wit...

A:

Q: A 1.4 kg mass slides to the right on the surface having a coefficient of kinetic friction 0.25. The ...

A: Given, Mass of block = 1.4 Kg coeffiecient of friction =0.25 initial velocity = 2.7 m/s and spring c...