3. A negatively charged rod is brought near an uncharged, grounded electroscope. Which of the following statements is true? O The positive charge flows from the electroscope to the ground O The electroscope stays neutral because the rod doesn't touch it O . The negative charge flows from the ground to the electroscope O The positive charge flows from the ground to the electroscope O The negative charge flows from the electroscope to the ground

Q: A 80-kg skydiver has a speed of 70 m/s at an altitude of 870 m above the ground.  (a) Find the kinet...

A:

Q: T5)

A:

Q: 1. Given that U is a function of T and V, That is U(T,V), derive the following expression from first...

A: Given U=U(T,V) Now partial derivative We know that U=Q-PdV Partial derivative at constant V So by ...

Q: G:19)

A: Power dissipated in the circuit P=VI=V2/R  

Q: Coherent light with wavelength 200 nm passes through two identical slits. The width of each slit is ...

A: Given, wavelength= 200 nm width of slit =a distance between the slit =d  

Q: A uniform rod of length L and mass m has forces applied as shown below. Which one of the following w...

A:

Q: The two plots below describe a wave on a string traveling in the negative x-direction. Which one of ...

A: Note that :  (x,t)=Acos(ωt+kx+ϕ) in this equation ωt and kx symbols of the coefficient are the same ...

Q: Successt. Figure 1 Figure 2

A: (a) in figure 1 , the ball is unable to cross the hill, now in order to hinder this reaction that is...

Q: A resistance wire having voltage of 2V at high potential and a low potential of OV with a total leng...

A: Concept used: Gradient of any quantity is how much is its value per unit length. It describes the ch...

Q: . A beam of light carries momentum and therefore the absorption of a beam of light results in an imp...

A:

Q: A standing wave on a string has nodes only at the ends, with a spacing of L. If wavelength is decrea...

A: nodes and wavelength relation is λ=2Ln

Q: Using Buckingham Pi Theorem

A: The Buckingham pi theorem states that any group can be arranged in an independent dimensionless rati...

Q: All six capacitors have equal value of 10.0 µF. Determine: a. The equivalent capacitance if measured...

A: Concept used: Net capacitance is taken according to capacitors being in series or in parallel.

Q: A 15.0 V power supply is connected across two parallel plates which are separated by a distance of d...

A: Power supply Vo = 15.0 V distance between plates d = 7.0 cm = 0.07 m Electron speed v = 4.40 × 104 m...

Q: Last summer, a Meralco electrician conducts a record of the electrical voltage supply readings withi...

A: To represent the graph for the given question.

Q: PLEASE ONLY ANSWER THIS IF YOU ARE 100% SURE YOU ARE CORRECT!

A: Answer initial velocity and initial displacement of the system

Q: ( d) What increase in altitude is necessary in the stratosphere to halve the pressure? Assume a cons...

A: Concept used: With increase in altitude, the air pressure decreases. It is explained using above equ...

Q: For the following circuit in the figure below, What is the current ( in units of A) in the 10-Q resi...

A: Ohm's law can be written as follows: V=IR

Q: A small airplane flying to Alaska is heading on a bearing of 70 degrees at 250km/h. A wind of 72 km/...

A: This problem can be solved using the formula for relative velocity.

Q: Professor, the solution is possible in detail and on the solution sheet it is

A: Given, Absolute pressure=1.25MPa Gauge pressure=1.151MPa Know that, The density of mercury =13600Kg/...

Q: An electron is moving at a constant speed of 31 m/s on a circle radius 3.5m Given: (C=2PiR) (deltaT=...

A: Given, v = 31 m/s R = 3.5 m   charge on the electron is e = 1.6 x 10-19 C  

Q: Giraffe bending to drink. In a giraffe with its head 2.01 m above its heart, and its heart 1.84 m ab...

A: Given data P0=258 torrhfeet=2.01 mhhead=1.84 mρ=1060 kg/m3

Q: (a) A velocity selector consists of electric and magnetic fields described by the expressions E = Ek...

A:

Q: 3) Show that when light reflects from two mirrors that meet each other at a right angle, the outgoin...

A:

Q: Consider an oxygen tank used for a mountaineering expedition. The mass of one molecule of oxygen is ...

A: Given, Mass of oxygen molecule = 5.3*10-26 kg Number density = 4*1027 particles / m3 rms speed = 500...

Q: Why here in this type of connect. The electrons went in the same direction with the current ( lc )an...

A: Concept used: Collector current is the output current of BJT circuit.

Q: How would Eratosthenes’s estimate have been different if the sun were actually closer to Earth?

A: Some 2,200 years ago, Eratosthenes calculated the radius of the world.He calculated the circumferenc...

Q: Consider the modified Atwood's machine shown. A mass of 2m sits on a level, frictionless, surface. I...

A:

Q: Given 4 point charges on an xy plane: q1 = 30pC at (-3,4) cm 40pC at (-3, -3) cm 60µC at (4.4) cm 94...

A:

Q: A ball is thrown with a mass of 0.50 kg against a brick wall. It hits the wall moving horizontally t...

A:

Q: 7) Two equal and opposite stationary charges are a small dista apart. A positive charge +q is placed...

A: Third option is true. Due to attraction between positive negative And  Repulsive force between posit...

Q: Two lenses are in series. An object is viewed through them. a) Pick values for the focal lengths of ...

A:

Q: ONLY OPTION 3

A: Given: The mass and spring are attached to each other of free length. The acceleration of mass is gi...

Q: A 2500 lb car is traveling around a 250 ft radius. The coefficient of static friction has dropped to...

A:

Q: 2. The resultant of three vectors is zero. Must they all lie in a plane?

A: Yes. All of the vectors must lie in the same plane.  

Q: Two rockets leave from a planet, each traveling at significant fractions of the speed of light a) Dr...

A:

Q: A home made spectrometer uses a diffraction grating with 500 lines per mm. Setting the diffraction g...

A:

Q: A a paddle for a boat is constructed of a stick of length L and a "quartic" end piece. The end can b...

A: We need to answer the following questions.

Q: An automobile wheel contains air with a pressure of 3x105 Pa at 25°C. The valve cover was removed an...

A:

Q: Suppose that we consider a circuit with a capacitor C , a resistor R, and a voltage supply (100sint ...

A:

Q: the phy Sical iner tia tensar in the yotem of Conudi na tes perpendicalar + the center of of a body ...

A: Inertia Tensor is given by I=100011000

Q: Help me

A: Answer 2,000 V

Q: Q

A:

Q: Q.3. a-) Consider the control system given below. Find the value of the parameter K if it is known t...

A: Given: G(s)=Ks+KH(s)=1sCharacterstic equation of closed loop system:          1+G(s).H(s)=0         ...

Q: Using the simulation as guidance https://simbucket.com/lensesandmirrors/ Choose converging lens of f...

A:

Q: The two 10-cm-long parallel wires in the figure are separated by 5.0 mm. For what v of the resistor ...

A: Given: The length parallel wires is 10 cm The wires separated by the distance 5 mm The force between...

Q: Describe the process taking place within an atom that leads to the emission of light.

A: Atom consists of electrons revolving around the nucleus in different shells when they are stable the...

Q: 10 2.0 cm 1 cm 1 cm 1 cm Figure 8: 8. The magnetic field inside a conducting wire of radius 2.00cm, ...

A:

Q: Homework: A point moves along the curve y² = 16 x (x and y in meters) in such a manner that the y c...

A: Given Curve y2=16xy=-4tfind velocity at point when t=5 secFrom the equationy2=16xx=y216=(-4t)216=t2T...

Q: A small box of mass m slides on frictionless ice with initial speed v to the right. It approaches a ...

A: m1v1+ m2v2 before collision= m1v1+m2v2 after collision mv1+0=0+2mv2 v2= v1/2 v2= 0.5