3. Which of the following questions are testable using scientific experimentation? Identify the dependent variable for each testable question. A. Are there more seeds in a medium-sized Red Delicious apple or a medium-sized Granny Smith apple? B. Why do people smoke cigarettes?

Q: A thin glass rod is bent into a semicircle of radius r = 2.7 cm. A charge +q = 6.0×10¯6 C is uniform...

A:

Q: What is the use of V type tail?

A: V tail arrangement is used to combine horizontal and vertical tail. It combines in such way that the...

Q: In a thermal power station, coal is used for the generation of electricity. How energy changes from ...

A: Heat energy->Mechanical energy->Electrical energy

Q: Just need part d percentage values

A: Given:-            v = keQtlnt+aa

Q: Determine the x. M. and z scalar components of the force. F= 900 N 60° 35

A: The values of components are given by:

Q: A wave of frequency 100Hz travels along a string towards its fixed end. When this wave travels back,...

A: 20

Q: . Two point charges of 30 nC and -40 nC are held fixed on an x axis, at the origin and at x = 72 cm,...

A:

Q: What is the minimum Energy possessed by the particle in a box?

A: b) π²ℏ²/2mL²

Q: What is dirac-delta function?

A: Dirac delta function is actually as functional (i.e. a function of function) which admits as input a...

Q: Electric field relation Ey (x, t) = Emax Cos [(1.5 × 107 m-1) x - wt] light waves pass through a sli...

A: Given: The given electric field of the light wave passing through a slit is given by Ey(x,t)=Emaxcos...

Q: Assertion: Good conductors of heat are also good conductors of electricity and vice-versa. Reasons: ...

A: Option a is correct

Q: A beaker full of hot water is kept in a room. If it cools from 80°C to 75°C in t1 minutes, from 75°C...

A: According to Newton’s law of cooling, Rate of cooling is proportional to temperature difference of t...

Q: 2-A spacecraft is measured to be 120.0 m long and 20.0 m in diameter while at rest relative to an ob...

A: Length Contraction Length Contraction is a phenomenon that occurs due to the effect of the special t...

Q: What is the frequency of a photon having energy 2.1 X 10-30 MJ?

A: E = 2.1 X 10-30+6 JFrequency, v = ?We know, Energy = hv, where h is the Planck’s ConstantTherefore, ...

Q: Which of the following forces can’t be chosen to be redundant?a) Vertical support at point Ab) Pc) V...

A: P

Q: The ratio of the diameters of the small piston to the large piston of a hydraulic lift is 1:10. Find...

A: Given information: The ratio of the diameters of the small and large pistons, dsdl=110  

Q: 2. Find the magnitude and direction of the Lorentz force on a current carrying wire in a magnetic fi...

A: Given Information: The length of the wire (l) = 150 cm = 1.5 m Case 1: The magnetic field (B) = 1.5×...

Q: Compact fluorescent bulbs aremuch more efficient at producing light than are ordinary incandescentbu...

A: Incandescent bulbs:The time the bulb is on in a course of three years is,t=3 years=365 days/year4h/d...

Q: A 5.00 kg block free to move on a horizontal; frictionless surface is attached to one end of a light...

A:

Q: A 0.150-kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.8...

A: From conservation of momentum,m1u1+m2u2=m1v1+m2v2from conservation of energy,12m1u12+12m2u22=12m1v12...

Q: The actual fission reactions that release energy in a nuclear power plant are about  A) one-third f...

A: Option b

Q: If a ladder weighing 250N is placed against a smooth vertical wall having a coefficient of friction ...

A: Given, Weight of ladder, W=mg=250 N Coefficient of friction between ladder and floor, μ=0.3

Q: What happens in Primary Rainbow Formation

A: In a primary rainbow, the arc shows red on the outer part and violet on the inner side. This rainbow...

Q: To design the space trusses which of the following rules is followed? a) All the loads are applied b...

A: B)

Q: Question: A firefighter, a distance d from a buning building, directs a stream of water from a fire ...

A: Projectile A projectile is an object that is thrown without any fuel. Generally, a projectile is thr...

Q: Surveying

A: Option b is

Q: On a horizontal surface, a crate with mass 50.0 kg is placed against a spring that stores 360 J of e...

A: Given energy stored in the spring is E=360J Crate mass m=50.0kg It came to rest at d=5.60m We need t...

Q: A bullet of mass 20g is found to pass two points 30m apart in a time interval of 4s. Calculate the k...

A: Given information: The mass of the bullet, m=20 g=20×10-3 kg The distance covered by the bullet, S=3...

Q: Calculate the velocity of the bob of a simple pendulum at its mean position if it is able to rise to...

A: D

Q: In the figure the current in resistance 6 is ig = 1.34 A and the resistances are R, = R2 = R3 = 1.62...

A: Given: R1=R2=R3=1.62ΩR4=15.5ΩR5=8.87ΩR6=3.17ΩI6=1.34Ω    

Q: How high must the body be lifted to gain an amount of potential energy equal to the kinetic energy i...

A: m = mass of the body lifted v = speed of the body = 20 m/s h = height to which body gets lifted g = ...

Q: When a plate of thickness 0.05 mm is placed in the path of a Michaelson Interferometer, a shift of 1...

A: As We know, μ = nλ/2t + 1Here, λ = 5000 Å = 5 X 10-7 m, n = 100, t = 0.05 mm = 5 X 10-5 mTherefore, ...

Q: Two persons are pulling the ends of a string in such a way that the string is stretched horizontally...

A: No

Q: The 3X3 matrix which is being made is having axis coordinates, point coordinates and the force coord...

A: Axis coordinates, point coordinates, and the force coordinates

Q: You measure the velocity of falling object at several times given in the table below. Time (s) Veloc...

A: Given, Data for time and velocity 

Q: The Energy of the particle is proportional to __________a) nb) n-1c) n2d) n-2

A: Given: A energy of the particle is directly proportional is given as,

Q: How Investigation of copper crystalline structure is done by X-ray diffraction?

A: X-ray diffraction is a phenomenon in which x-rays are reflected from the atoms in a crystalline soli...

Q: Nith a unirorm density of (a) What is the electric field 5.10 cm in front of the wall if 5.10 cm is ...

A: Electric Field The electric field is defined as a region in space around a charge or a system of cha...

Q: A block of ice with mass 4.00 kg is initially at rest on a frictionless, horizontal surface. A worke...

A: Option c

Q: Based on the following Figure, the floor cavity ratio, FCR s. .... 1m 3 m section 0.5m 16 m 12 m pla...

A: B option

Q: The weight on the left is 90 grams and the distance from the center point is 3 units. The distance o...

A:

Q: A block of ice with mass 4.00 kg is initially at rest on a frictionless, horizontal surface. A worke...

A: Given: The mass of the ice is m = 4 kg The position of the ice as the function of time is given as  ...

Q: The Dieterici equation of state is similar to the van der Waals equation in that they both employ ga...

A: For partial derivative variables other than with respect to which derivative is being taken are trea...

Q: A bullet fired at an angle of 45° with a velocity of 20 m/s. What is the horizontal range of this fl...

A:

Q: When a pebble is dropped into a pond of still water, what happens?a) Particles moveb) Waves movec) T...

A: When a pebble is thrown in still water, a circular pattern of alternate crests spread out. The kinet...

Q: A parcel of air moving in a straight tube with a constant acceleration of - 4m/s^2 has a velocity of...

A: A) 5 m/s

Q: When do ionic compounds conduct electricity? a) In gaseous state b) In solid state c) When dissolved...

A: When dissolved in water 

Q: Part B please.

A: The formula to calculate the magnitude of the electric field due to any point charge is given by E=k...

Q: A certain brand of hotdog cooker works by applying a potential difference of 136 V across opposite e...

A: Given: Potential difference U=136 V Current I=13.0A Energy E=61.5 kJ To find: How long will it take ...

Q: Please show all work and circle or highlight your answer. Thank you

A: Work  Work is a physical quantity that is given by the dot product of the force and the displacement...