How are the units 1. square yard hectare 2. 3. km² 4. cm² 5. mm² related to the S.I. unit of area?

Q: Name and define the SI unit of time. How is it related to; 1. minute 2.hour 3. day and 4. Year

A: Given  Name and define the SI unit of time. How is it related to, 1. Minute 2. Hour 3. Day and 4.…

Q: Find the distance covered by car Speed=120 km/hr Time=2.4 hr

A: We know  Distance = Speed x Time

Q: HW1\ Light falls from air on a transparent medium of (1.5) absolute index of refraction and at an…

A: In the given question, Refractive index of transparent medium ( n2) = 1.5 Angle of incidence (θ1)…

Q: Find velocity Momnetum-22.3 kg*m/s Mass=2 kg

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Q: pedestrian is running at his maximum speed of 6.0 m/s to catch a bus stopped at a traffic light.…

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Q: singly ionized helium (atomic number = 2) is initially in its second e. It ends up in the ground…

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Q: A 4.2 -g bullet leaves the muzzle of a rifle with a speed of 340m / s . What force (assumed…

A: Write the given values with the suitable variables. m=4.2 g=0.0042 kgu=0 m/sv=340 m/sd=0.83 m Here,…

Q: 5.) A silicon pn junction diode at T = 300K is forward biased. The reverse saturation current is…

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Q: The distance between an electron and a proton is varied. Which pair of graphs best represents the…

A: Gravitational force:- It is the force with which all physical objects attract each other. It is one…

Q: QUESTION 21 A block of mass M is suspended at rest by two strings attached to walls, as shown in the…

A: Q.11  Kyle's  true weight (wo) = 600 N  apparent weight (wap) = 500 N  Weight is given as :- w = m g…

Q: On March 20th, 2019, which of the following places did NOT receive oblique insolation? O Mbandaka,…

A: Sun is the ultimate source of energy for earth. The solar energy to a particular area is not…

Q: Find the equivalent resistance to the combination shown on the right. a 7.6 Ω 502 m 2202 9Ω 302 6Ω…

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Q: Two large parallel metal plates are 5.0 cm apart. The magnitude of the electric field between them…

A: Given    Two large parallel metal plates are 5.0 cm apart. The magnitude of the electric field…

Q: Suppose there are approximately 2.0 x 10° asteroids in the asteroid belt that have a diameter larger…

A: Given:- The 2.0 x 106 asteroids in the asteroid belt have a diameter larger than 0.5 km The asteroid…

Q: 1. Kurdapya, a grade 12 STEM student is helping her sister solve this problem. How fast is an oxygen…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: What is an electric charge? Explain it concepts and give examples

A: Electric Charge is nothing but the amount of energy or electrons that pass from one body to another…

Q: In the figure, two 7.60 kg blocks are connected by a massless string over a pulley of radius 1.60 cm…

A: a) Apply the second angular kinematic equation to determine the angular acceleration of the pulley.

Q: A rectangular solid has a height of 2m, width of 3.5m, and 6m long. How much pressure does it apply…

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Q: reduce the of sound by 25%. How far bac must you sit in order to hear the

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Q: 12) An ideal gas occupies 6.00 x 102 cm³ at 20°C. At what temperature will it occupy 1.20 x 103 cm³…

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Q: A rectangular loop (2cm X 4 cm) is placed in the X-Y plane and is surrounded by a magnetic field…

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Q: A pulse radar is used to detect a target with an area of 10 m2 located at a distance of 120 km. If…

A: A pulse radar tells us about the distance to the target by calculating pulses timing and using…

Q: The ratio of the distribution of the atoms in the sapphire laser that produces A beam of light of…

A: The wavelength of the beam of laser light, λ=5×10-3 A∘ Temperature, T=300 K

Q: NOTES PRACTICE ANOTHER A layer of oil, with a refractive index of 1.40798, 0.94000 mm thick, floats…

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Q: (a) A spaceship is projected vertically upward from the Earth's surface with an initial speed of…

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Q: period is the distance between two similar points in successive identical cycles in a wave. a. true…

A: Given    a period is the distance between two similar points in successive identical cycles in a…

Q: In the following diagram, S, and S, are identical sound sources. If sound waves are emitted in…

A: Given: S1 and S2 are in phase. We need to write an expression for L1 and L2 that will result in…

Q: 2. For parallel circuits, you saw that the potential difference across each resistor was the same as…

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Q: The angular position of a point on a rotating wheel is given by 0 = 7.97 +1.93t² + 3.82t3, where is…

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Q: a noise level meter reads the sound level in a room to be 85 dB. What is the intensity of sound in…

A: Given sound level 85dB We know sound level in dB is  dB=10log( I/I0) where l is intensity of sound…

Q: Two charged particles are 7.54 cm apart. They are moved and the force on each of them is found to…

A: In the given question,  Initial separation between two charges (d) = 7.54cm = 7.54×10-2m The charges…

Q: A skier traveling 12.5m/s reaches the foot of a steady upward 21.7151 incline and glides 17.25655m…

A: Write the given values with the suitable variables. u=12.5 m/sθ=21.7151°d=17.25655 mv=0 m/s Here, u,…

Q: A boy named Jose walks westward for 5 km and then northward for 5 km and then 5 km southwest. How…

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Q: A cat is standing in a front of a door and then walks 10.5 m towards a tree and then climb 3.5 m to…

A: In this question  we use pythagoras theorem and get answer.

Q: A plane electromagnetic wave has the magnetic field given by k B(x,y,z,t) = Bo sin a [(x + 1) = /25…

A: The oscillations are the basic cause of waves. The wave is only produced when we have something of…

Q: According to Hertz frequency formula, which of the following is correct? Frequency = C * Wavelength…

A: Required: Hertz frequency formula

Q: a small 0.383 kg block slides down a frictionless surface through height h = 0.752 m and then sticks…

A: In the given questioon, Mass of the block (m)=0.383 kg Initial height of the block (h) = 0.752m Mass…

Q: Investigators measure the size of fog droplets using the diffraction of light. A camera records the…

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Q: Find the value of mass Force=111 N Acceleration=1.77 m/s2

A: Given data : Acceleration=a Force=F   Required : Mass

Q: A superball is a high bounce ball. Ralph, who is 10, is playing with one in the dining room. He…

A: The expansion of material varies according to the temperature. When the temperature increases then…

Q: Observer S detects two flashes of light. A big flash occurs at x1 = 1271 m and, slightly later, a…

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Q: A solid metal sphere of 2.0 cm radius is electrically charged with an unknown charge Q. The electric…

A: The given problem lies in the topic of Electrostatics and Properties of electric charges. The…

Q: A 1400kg car is traveling with an initial speed of 25.5m / s . Determine the car's speed after -…

A: Write the given values with the suitable variables. m=1400 kgu=25.5 m/sW=-2×105 J Here, m is the…

Q: A steel is 20cm long at 20 oC. The coefficient of linear expansion for steel is 12 x 10-6 (oC)^-1…

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Q: Q/ The moment about the centre of the bolt is 0.2 m 0.03 m 300 N 15%

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Q: In the Bohr model of the hydrogen atom, an electron revolves around a proton in a circular orbit of…

A: In the given question, The radius of circular orbit (a) = 5.3×10-11m The orbital speed of electron…

Q: Achievement happens when you are efficient antenna

A: An antenna does not have an efficiency of 100% due to- dielectric losses conduction losses…

Q: The block shown in the figure is sliding along a frictionless surface inclined at an angle theta…

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Q: Calculate the partial pressure of oxygen at a barometric pressure of 500 mm Hg if oxygen is 20% of…

A: Write the given data. Pair=500 mmHg%O2=20%

Q: A rocket takes off from Earth's surface, accelerating straight up at 59.2m / (s ^ 2) Calculate the…

A: In the given question, Mass of the astronaut (m) = 89.4kg Acceleration of rocket (a) = 59.2m/s2…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.