The standard kilogram ( fig.1.1a ) is a platinum-iridium cylinder 39.0 mm in height and 39.0 mm in diameter. What is the density of the material?

Q: A bottle of soda pop at room temperature (72°F) is placed in a refrigerator where the temperature is...

A: To find: To find the temperature of a soda using the given intervals

Q: v = ? 60 A ball is thrown with an initial speed of 20 m/s at an angle of 60° above the ground. If ai...

A: initial speed = 20m/sangle of projection = 60 0g = 10 m/s2At highest point of trajectory , only the ...

Q: A block rests on a frictionless horizontal surface and is attached to a spring. When set into simple...

A: since friction force is zero mechanical energy can be conserved

Q: A sprinter accelerates from rest to a top speed with an acceleration whose magnitude is 3.70 m/s2. A...

A:

Q: A river has a constant current of 3 kilometers per hour. At what angle to a boat dock should a motor...

A: Current speed, v1 = 3 km/hr Speed of the boat, v2 = 25 km/hr Let v be the resultant speed of the boa...

Q: If you add boiling water to a cup at room temperature, what would you expect the final equilibrium t...

A: The zeroth law of thermodynamics gives an idea about the flow of heat from hotter to colder objects ...

Q: Wavelength of a Bullet. Calculate the de Broglie wavelength of a 5.00 g bullet that is moving at 340...

A: Given: The mass of the bullet is 5.00 g. The speed of the bullet is 340 m/s.

Q: Why must engineers and scientists shield against x-ray production in high-voltage equipment?

A: There are some electromagnetic waves in physics x-ray is one of them. X-rays are widely used in medi...

Q: A photon of green light has a wavelength of 520 nm. Find the photon’s frequency, magnitude of moment...

A: Given: The wavelength of the photon is λ=520 nm.   The expression of frequency of photon is given ...

Q: A hypodermic needle of length 3 cm and internal diameter of 0.45 mm is used to draw blood with visco...

A: The length, L=3 cm=0.03 m   The diameter, d=0.45 mm=0.00045 m   The viscosity, η=4 mPl=0.004 Pa.s

Q: In which situation is Torque positive or negative?

A: The torque is the resultant of the force being exerted on the body with radius from the axis to the ...

Q: Radiation has been detected from space that is characteristic of an ideal radiator at T = 2.728 K. (...

A: Weins displacement law is λmT=2.90×10-3 mK Here, λm is the wavelength corresponding to maximum distr...

Q: I setting up a chase scene for a movie, a stunt woman builds a 45.0 degree angleramp.  If she drives...

A: horizontal speed = 50 m/s Angle of ramp = 45 degreeHorizontal range = v2Sin2θ / g  = (50)2 Sin(90o) ...

Q: A legendary Dutch boy saved Holland by plugging a hole in a dike with his finger, which is 1.10 cm i...

A: Diameter of the hole (d)=1.1 cm Therefore, radius of the hole (r)=0.55 cm Depth of hole below the su...

Q: Set the water to produce a CW. Set the frequency slider in the middle, then using the stopwatch feat...

A: The period of the wave is T = 1.51 s. The wavelength of the wave is λ = 14 m. The amplitude of the w...

Q: Suppose a gas-filled incandescent light bulb is manufactured so that the gas inside the bulb is at a...

A: (a) The conversion from Celsius temperature to kelvin temperature is done as: And,  

Q: A ball of mass m1 and a block of mass m2 ( m1 > m2)are attached by a lightweight cord that passes...

A:                                                                                                     ...

Q: Describe the wave nature of light (electromagnetic radiation) and the particle nature of light.

A: Light:- Light is defined as the electromagnetic radiation (wave nature) or transverse radiation (par...

Q: A photon and a free electron each have an energy of 6.00 eV. (a) What is the wavelength of the photo...

A: (a) The energy of a photon is given by the equation, Here, h, c and λp represent the Planck’s const...

Q: What are the signs of the charges on the particles in Figure ?

A: The force is towards the center of the arc. The direction of force is given for electron and proton ...

Q: A 160 g baseball is thrown with a speed of 20 m/s. It is hit straight back toward the pitcher at a s...

A:

Q: (a) What is the minimum potential difference between the filament and the target of an x-ray tube if...

A: (a) Wavelength = 0.15nm = 1.5 Angstrom  The potential is given by  λ=12.27VA°1.5 =12.27VV = 66.9V   

Q: Calculate the magnification of an object placed 6.20 mm from a compound microscope that has a 6.00 m...

A: Given: The object distance = 6.20 mm The focal length of objective = 6 mm The focal length of eyepie...

Q: 7. The D string on a guitar oscillates with a fundamental frequency of 146.8 Hz. Its length is 0.640...

A: We know that V=fλ where V=speed of wave f=frequency λ=wavelength Speed of sound wave in string=V=Tμ ...

Q: In an attempt to escape his island, Gilligan builds a raft and sets to sea. The wind shifts a great ...

A: →d1 = 2.5 (-cos(45)i^ + sin(45)j^) = -1.77 i^ + 1.77 j^ km →d2 = 4.7 (+cos(60)i^ - sin(60)j^) = 2.35...

Q: please answer the following question and show work please

A: Emf induced between both ends of moving rod in magnetic field is,  ε=vBl Given : Emf induced between...

Q: Show that β ≈ 3α, by calculating the change in volume ΔV of a cube with sides of length L.

A: The initial volume of a cube is, The change in the length of a cube due to temperature difference c...

Q: Jason takes off across level water on his jet-powered skis. The combined mass of Jason and his skis ...

A: Given: Mass of Jason and his skis m = 75 kg. Forward thrust F = 200 N Coefficient of kinetic frictio...

Q: Q4: * A bullet is fired from the ground with an initial velocity of 50 m/s that makes with the horiz...

A: Given: The velocity of the bullet is V=50 m/s. The angle made by the bullet is θ=30°.   The expres...

Q: A fiber optic cable is composed of a core with an index of refraction of 1.80 and cladding that has ...

A:  Given: The index of refraction of the core is ncore=1.80, The index of refraction of the cladding i...

Q: Activity 1: Applications of Mirror Direction: List down and explain its uses at least 5 applications...

A: We use mirrors widely in our everyday life. Primarily mirrors are of two types : Curved Plane  Cur...

Q: A particle has a function for Potential Energy as shown below. U = (7.30 J/m1) x1 + (9.40 J/m4) x4 W...

A: Given: U=7.30 Jmx+9.40 Jm4x4 The expression for force (F) on the particle is: F=-dUdx Substitute all...

Q: A liter of water at room temperature (20 degrees) is placed in a refrigerator with a temperature of ...

A: Given quantities: mass of water (m) = 1 kg                                              .... ( as 1 ...

Q: If a transit depth of 0.001 (or 0.1% decrease in brightness) is detected for a star with a radius of...

A: (given) Transient depth decreases of about 0.1% = 0.001 R* = 0.3 Rsun Using the formula for the plan...

Q: an electron travels at a speed of 1x10^4 m/s perpendicular to a magnetic field. The field provokes t...

A:

Q: 2.) A missile is launched horizontally at A with the speed V°=188 m/s. The horizontal distance trave...

A:

Q: If the air has a thermal energy of 4.5 x 10 J, what is the air temperature ?

A: Given, thermal energy, E = 4.5 x 10 J the air temperature, T=? Using formula: E=32kBTWhere, kB=Boltz...

Q: Find the weight of a 70 kg astronaut on the Earth. B)  On the moon (g=1.6 m/s2). C) On Venus (g=8.7 ...

A: Solving first three parts. The expression for weight is, W=mg                        (I)            ...

Q: A scuba diver 12L tank is filled with air at a gauge pressure of 150 bars. If the diver uses 30L of ...

A: gauge pressure = 150 bars atmospheric pressure = 1 bar pressure due to water column = 150 bar ( as t...

Q: Does Huygens’ principle apply to sound waves? To waterwaves? Explain how Huygens’ principle makes se...

A: To explain: Whether Huygen's principle applies to sound waves and water waves or not.

Q: When the length L of aclock pendulum is held constant by controlling its temperature,the pendulum’s ...

A: Given, T=2πLg12,  Length, L=100 cm, g=980 cm/s2, and dT=0.001 s.

Estimate of calculation