What is the maximum kinetic energy of photoelectrons ejected from sodium by the incident radiation of wavelength 450 nm?
Q: 3. A sample of the radioactive isotope cadmium-109 is initially 220.0 grams. Use Appendix A from the…
A: (a). Cadmium has atomic number Z= 48 and this cadmium isotope has atomic mass A 109. Atomic mass…
Q: Which basic mode of communication is used for telephonic communication?
A: There are two basic modes of communication. The first one is point-to-point communication, and…
Q: science
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Q: Why is science constantly changing?
A: Science is nothing but study and observation of nature and natural phenomenon. As human beings are…
Q: This exercise uses the radioactive decay model. The half-life of strontium-90 is 28 years. How long…
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Q: When using the scientific method, your hypothesis should be.. testable. O diplomatic. true.…
A:
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A: Given data The mass of the bigger block is given as M. The mass of the smaller block is given as m.…
Q: what is science?
A: what is science?
Q: Distinguish between a scientific fact ,a hypothesis ,a law and a theory?
A:
Q: old is Minnie when her brother dies?
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Q: In understanding the nature of science, why might new science ideas be opposed??
A: The accepted views of science knowledge can change over time. Changes can result from new science…
Q: please slove the short answer question
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Q: A microwave oven has a frequency of 2,466 MHz (1 MHz = 1 million Hz). What wavelength "microwaves"…
A: given data: frequency f=2466 MHz =2466 x 106Hz...(1MHz=106Hz) speed of light c=299792458m/s=…
Q: What determines the validity of a theory?
A: The theory, which hold up by evidence and proved by many researchers. A theory is valid if it’s…
Q: Use integration to find the moment of inertia of a solid uniform cone about y axis, as shown. [Must…
A:
Q: What is the difference between a hypothesis and a question?
A: A question is based on scientific theory. Again scientific theory is always accepted since it is…
Q: 5ON BoV 252 2002 Daver supply ig oallery?
A: the equivalent resistance of 2 resitor r1 ans r2 connected in parallel is given by R R =…
Q: Which activity is easier to do? Climbing the stairs carrying nothing or climbing the same flight of…
A: When we climb up the stairs we move against gravity. So body has to do work against gravitational…
Q: Answer the following questions concening the situation shown below. bas arit gnizood w idgiow sdi an…
A: Newton's Second Law of motion According to Newton's Second Law of motion, the rate of change of…
Q: cammutation helation C, ]o bhove that is Zers fasree particle
A: Here we use Hamiltonian operator case…
Q: the first two are inncorrect
A: a) For T1, both blocks are in action So, determine the tension T1. T1=ma+mg+T2T1=(3.54 kg)(1.60…
Q: E1.A horizontally directed force of 25.0 N is used to pull a box a distance of 1.5 m across a…
A: Dear Student, As per our company policy, I am allowed to answer only first 3 subparts. So, kindly…
Q: A proton, traveling upwards at 5x10* m/s, enters a magnetic field of 0.65 T pointing out of the…
A: Answer 5.2*10^-15 N
Q: answer
A: Magnification of a lens is equal to the ratio of image distance to that of object distance. M = v/u…
Q: In the saturation region (I-V characteristics) of JFET the value of ID is .. at specific (VGS = %3D…
A: In saturation region of the JFET I-V characteristic To find: Value of ID in saturation region at…
Q: The density of an object is 80kgm-3. Calculate the mass if the volume is 25m3
A: Given : Density (ρ) = 80 kgm-3 Volume (V) = 25 m3
Q: Answer in terms of calculus. Look at pics for question.
A: Given Information: The location of the charge "q" = (0, y) The point where the electric field is…
Q: Distinguish between Science and Pseudoscience.
A: Science is systematized knowledge derived from observation, study, and experimentation based on…
Q: Droww Hhe grofole thet rehtes electnc ofreld streng Hh ini the field 7a homt charge esit, the elmgen…
A: Introduction: The electric field strength is defined as the intensity of the electric field at a…
Q: Given the införmahon provided in figure 2, dettrmine: a) Ie b) VE 4.7K RI c) Vs d) R. LIe ove=12V…
A:
Q: Calculate the density of a substance that has a mass of 680 g and a volume of 1,00O cm.
A: Given, mass of the substance is, m=680g and volume is, V=1000cm3 Then density will be,…
Q: 25. If a complex machine is made up of a lever with a mechanical advantage of 3 and a wheel and axle…
A: Mechanical advantage is resistance force, Fr divided by effort force , Fe. And MAtotal = MA1 ×MA2
Q: What is geography
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