The threshold of dark-adapted (scotopic) vision is 4.5 ✕ 10−11 W/m2 at a central wavelength of 500 nm. If light with this intensity and wavelength enters the eye when the pupil is open to its maximum diameter of 7.9 mm, how many photons per second enter the eye? photons/s
Q: Projectile Motion Alice throws a ball straight up with aninitial speed of 40 feet per second from a ...
A: Given data h0=5 ftv0=40 ft/s
Q: An object with charge q = -6.00 * 10^-9 C is placed in a region of uniform electric field and is rel...
A: Relation between Work done in electric field and kinetic energy is given by, q∆V=-12mv2 And magnitud...
Q: The sunspot cycle affects I. the latitude at which sunspots are visible at a given time. II. the...
A: The sunspot cycle affects I. the latitude at which sunspots are visible at a given time. II. the num...
Q: A therapist pushes a wheelchair in which his patient sits over a level ground. The cart travels in a...
A:
Q: Two capacitors of 200 and 800 nF, respectively are connected in parallel. The combination is then co...
A: Given : C1=200nF C2=800nF C3=600nF Cnet=500nF Refer to the ci...
Q: A solenoid has 505 turns over a length of 0.54 m. What current will produce a magnetic field of 0.01...
A: Number of turns of solenoid N = 505 Length of the solenoid L = 0.54 m The magnetic field inside the...
Q: What would be the image distance for the -15.0 cm lens if the object distance were +60.0 cm? What wo...
A: Formula:1f=1do+1di1di=1f-1do----(1)where, f=-15.0 cm=-0.15 mdo=60.0 cm=0.6 mPutting values in the eq...
Q: A basket of flowers of mass 3 kg is placed on a flat grassy slope that makes an angle θ with the hor...
A:
Q: You shine a beam of polarized light in air on a piece of dense flint glass (n = 1.66). (a) If the po...
A: Given: To find the angle of incidence and the angle is given as,
Q: Can an object be in equilibrium when only one force acts on it? Explain.
A: For an object be in equilibrium sum of all the forces acting on it should be zero.
Q: Three particles of mass 2 g, 1 g, and 3 g respectively, have position vectors: ,- Sei – 21 j+ (3 -2€...
A:
Q: In the circuit shown, the capacit S) is closed at (t = 0). Find the ti s 5.4 * 10-4 A.
A: Given : two of the 8μF are connected in series. So the equivalent capacitance will be 4μF.
Q: 3. Water flows into a cylindrical tank (Dank =+ through an inlet at (1) while flowing out through ou...
A: Volume Inflow rate = A1xV1 =πD124xV1=πx0.524x25=4.90ft3/s Volume Outflow Ra...
Q: . A fish swimming in a horizontal plane has v = (4.00 i + 1.00 j) m/s S at a velocity point in the o...
A: Given Initial velocity v1 = ( 4.00 i + 1.00 j ) m/s Position relative to...
Q: Please help me with this question. Thanks!
A:
Q: Why must a room air conditioner be placed in a window rather than just set on the floor and plugged ...
A: Both air conditioner and refrigerator work on the principle of reverse Carnot cycle. Heat from the s...
Q: (a) Write the wave function ų(x)= 4o•e'kx in the form w(x) = a + ib, where a and b are real quantiti...
A: a) The wave function is given by ψ(x)=ψ0 eikx =ψ0( cos kx+i sin kx) =ψ0 cos kx+iψ0 sin...
Q: Thorium 230 90Th decays to radium 22688Ra by a emission. The masses of the neutral atoms are 230.033...
A: Energy released in a decay depends on the mass difference between initial atom and final atom, or th...
Q: For free electrons in a solid with Fermi energy EF and temperature T, find the energy for which the ...
A: Fermi energy of the solid=Ef Temperature of the free electrons, T Probability of occupancy=0.33 The ...
Q: Work, force and power. Which of these is the dimension of the quantity shown in the equation below? ...
A: Given expression is the expression of Generalised force in lagrangian mechanics which plays a signif...
Q: What are the surface characterization of copper nanoparticles using TEM
A: Transmission electron microscopy (TEM) has been employed to characterize the size, shape and morphol...
Q: You are a member of an Alpine Rescue Team. You must project a box of supplies up an incline of const...
A: A box of supplies up an incline of constant slope angle a so that it reaches a stranded skier who is...
Q: The homogeneous transformation is used the express a frame relative to an other frame. Select one: T...
A: Yes, homogeneous transformation is used the express a frame relative to another frame. But the actua...
Q: Three resistors are connected in series connection (R1 = 20 OHMS, R2 = 30 OHMS AND R3 - 350 OHMS) WI...
A: We can apply Ohm's law to calculate total current.
Q: If your wavelength were 1.0 m, you would undergo considerable diffraction in moving through a doorwa...
A: Given:Wavelength, λ=1.0 mmass of the person, m=60 kg De-Broglie wavelength,λ=hp
Q: (b) How can you calculate electric force on any charge? Which point in Fig. 1 gives the strongest el...
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...
Q: After a laser beam passes through two thin parallel slits, the first completely dark fringes occur a...
A: Given data m=0θ1=19°I=I00
Q: Aliens visiting Earth are fascinated by baseball. They are so advanced that they have learned how to...
A: Given data V=35 m/sS=18 m
Q: Cylinder A weighs 150 lb and has a diameter of 3 ft and a radius of gyration of 1 ft. Block B weighs...
A: The weight of the box is m1=100 lb The weight of the cylinder is m2=150 lb The radius of gyration is...
Q: Suppose Answer follow image.Answer must be correct
A: (a) given that E =100sin(6×107t) sin(z)ay^ ---------------------(1) H = -0.1328Cos(6x107t)cos(z...
Q: The 1 kg ball moves with the parabolic bowl rotating at constant speed around a vertical axis (the b...
A: Here. we draw the free body diagram of the ball and apply Newton's second law of motion to get the r...
Q: If an object on a horizontal, frictionless surface is attachedto a spring, displaced, and then relea...
A: The displacement of the object is 0.120 m. The initial speed is 0. After 0.8 s the displacement is 0...
Q: claim for kepler planet 4 sentence on your own words and some evidince
A: KEPLER PLANET
Q: 4 - Find the center of gravity M of the three dimensional homogeneous wire ABCD by using the coordin...
A: Here, we use the formula for centre os mass of a system of masses to calculate the centre of mass of...
Q: Two spheres A and B (of mass m each) were fired vertically from the ground with different initial ve...
A: Introduction: Just before collision: ↑0msAm ↑77msBm Just after collision:
Q: A star rotates with a period of 30 days about an axis through its center. The period is the time int...
A: Let i denote initial (star) f denote final (neutron star)
Q: A 150 Hz wave is observed to have a wavelength of 3 m/wave. Speed of wave is calculated to be? Choo...
A:
Q: If the sun releases 3.826 × 10 26 Joules of energy every second, how many fusion reactions does it t...
A: Given, Sun releases energy,E=3.826×1026J/sSpeed of light,c=3×108m/s2 Reaction of Nuclear Fusion, H12...
Q: Scientist devise a plan to launch a rocket and inelastically stop an asteroid headed toward earth. T...
A: This is an example of inelastic collision, in which the rocket inelastically collides with the aster...
Q: Q6) (a) Two sites are being considered for wind power generation. In the first site, the wind blows ...
A: Calculate the mass flow rate of the wind at sight 1 as follows: Here, the density of the air isand ...
Q: Which of the following statements is TRUE regarding the free energy diagram shown below?
A: In a reaction if free energy of product is less than free energy of reactant, then the reaction is t...
Q: Please help explain the steps on how to approach problem 7. Ty.
A: f) This problem is based on the energy conservation principle. Before the decay, the system of alpha...
Q: Adding a proton to 12C results in an unstable nucleus. Check the resulting nucleus for all forms of ...
A: Adding a proton to carbon will increase its atomic number from 6 to 7 as well as it will be converte...
Q: A 4.00 kg block of ice is placed against one end of a horizontalspring that is fixed at the other en...
A: Given data m=4 kgK=200 N/m∆x=0.025 m
Q: Find the smallest positive value of t for which f(t) = 5 sin(t−pi/6) is the following. (a) f(t) is...
A:
Q: Which equation best represent the simple climat e model 1 •E = mt? %3D · Lambdu - 58981T 'E- in = E....
A: According to simple climate model total energy remains conserved. Quantitative climate models take a...
Q: for good dielectric derive the expressions for attenuation constant (α), Phase shift constant (β), a...
A: For lossless dielectric or perfect dielectric is called Good Dielectric. σ<<ω∈σ=σ° ,∈=∈°∈ , μ=...
Q: Find the critical value for the charge at the top left corner that makes V< V, if d=5mm. +4C -? d A ...
A: The electric potential at a point is the work done to bring a unit positive charge from infinity to ...
Q: The work W done by a constant force F S on an object that undergoes displacement sS from point 1 to ...
A: Given data F=5 NS=0.8 mθ=60°
Q: Write the precise nuclide identifi cation for the missing element x for the following reactions. ...
A: Given: To find the precise nuclide identification in the missing element as, As per rule, allowed ...
The threshold of dark-adapted (scotopic) vision is 4.5 ✕ 10−11 W/m2 at a central wavelength of 500 nm. If light with this intensity and wavelength enters the eye when the pupil is open to its maximum diameter of 7.9 mm, how many photons per second enter the eye?
photons/s
Step by step
Solved in 2 steps with 2 images
