An object is dropped from a height H = 15 m. Ignore air resistance. How much time elapsed when it reached the ground? Solve its impact velocity.

Q: After firing an object at any angle between 0 and 90 degrees, the x component of the final velocity…

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Q: Lift on an airplane is F = (P2-P1) A. The total wing area of a certain airplane is 20 square meter.…

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Q: The resolving power of a refracting telescope increases with the diameter of the spherical objective…

A: In very large apertures, there is a problem of lens sagging, a result of gravity deforming glass.…

Q: In the figure the current in resistance 6 is ig = 1.39 A and the resistances are R1 = R2 = R3 = 2.32…

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Q: The spaceship Lilac, based on the Purple Planet, is 711 m long when measured at rest. When the Lilac…

A: Length of the spaceship Lilac at rest,  Lo=711 m When Lilac passes Earth, observers there measure…

Q: What is the activity (in particles/s) of a sample of Carbon-14 that contains 9.070E+21 nuclei?

A: Half life of C-14 (t1/2) = 5730 years  N = 9.070 x 1021  As we know, Activity (A) = 0.693 N/t1/2…

Q: Find the rest energy, in terajoules, of a 12.1 g piece of chocolate. 1 TJ is equal to 1012 J . rest…

A: Rest energy (E) = M0 c2 Where M0 = 12.1 g c = 3 x 108 m/s

Q: -kg object is lifted 2.7 m from the floor to a table. What is the object's gravitational potential…

A: Given Mass of object, m=45 kgObject is lifted to height, h=2.7 m

Q: n enemy spacecraft attempts to escape from your spacecraft by moving away from you at 0.273 of the…

A: Given data:-  The crew of an enemy spacecraft attempts to escape from your spacecraft by moving away…

Q: In the figure, two circular arcs have radii a = 13.4 cm and b = 11.1 cm, subtend angle e = 71.0°,…

A: We have two arcs of radii a=13.4 cm and b=11.1 cm which are subtend at an angle of 71o and carrying…

Q: calculate the thermal equilibriumi concentrutin of electron and holes Fora given fermi enersy…

A: The change in the Fermi level is a function of a donor and acceptor  impurity concentration that are…

Q: TRUE OR FALSE If two vectors point in the same direction, they are equal vectors? EXPLAIN

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Q: During a test, a rocket travels upward at 54 m/s and when it is 25 m from the ground its engine…

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Q: As an admirer of Thomas Young, you perform a double-slit experiment in his honor. You set your slits…

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Q: During a tennis serve, a racket is given an angular acceleration of magnitude 135 rad/s2. At the top…

A: Given Angular acceleration is α=135 rad/s2 Angular speed of the rocket is ω=18 rad/s Distance…

Q: A space probe approaches a planet, taking measurements as it goes. If it detects a potential…

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Q: QI (ii) Figure QI (ii) a residential heat pump plant has a coefficient of Performance 2.4. Calculate…

A: Write the expression for the coefficient of performance of the heat pump. Here, HE is the heating…

Q: A certain brand of hotdog cooker works by applying a potential difference of 152 V across opposite…

A: Write the given values with the suitable variables. V=152 VI=10.6 AE=63.2 kJ=63.2×103 J Here, V is…

Q: Q3: A stone is thrown horizontally from the edge of a building with an initial speed of 13.2 m/s.…

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Q: A 1.0 cm-tall object stands in front of a converging lens. It is desired that a virtual image 2.0…

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Q: Three masses are attached to a 100-meter long beam as shown below. The mass of the bea, is 210…

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Q: Sound will travel the fastest at 20°C in   Air   Wood   Glass

A: Given data: Temperature T = 20oC Sound's speed; For air = 343 m/s For wood = 3,850 m/s For Glass =…

Q: A ray of light strikes a thick sheet of glass (n = 1.5) at an angle of 46" with the normal. Find the…

A: Dear student According to law of refraction or Snell's Law: μ1sini=μ2sinr Here, μ1= Refrective index…

Q: a huge system of stats that has hundreds of millions to hundred of billions of stars that id…

A: In space hundreds of millions of stars Steller objects, dust , gas etc combine together a huge…

Q: Explain the Significance of Waves in a real-life situation. Use only 3 comprehensive sentences in…

A: We have to explain the significance of wabes in daily life situation

Q: 2. Calculate the density of Earth if the radius of the Earth is equal to this Schwarzschild radius…

A: Given that  radius of earth is equal to Swarzschild radius.  Swarzschild radius, rs = 2GM/c² Where,…

Q: The uncertainty in the velocity of an electron is 66 × 10-3 m/s. What is the uncertainty in its…

A: The uncertainty in the velocity of the electron dv=66*10-3m/s, mass of electron m=9.1*10-31kg and…

Q: An object was placed in a freezer maintained at temperature -15 degrees Celsius. Assuming the system…

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Q: square surface with sides of  2 m × 2m is located over the xy-plane, where a constant electric field…

A: Dear student The electric flux is defined as: ϕ= EAcosθ Where E = Elecrric field A = Area of surface…

Q: A machine gun fires 6 bullets /s, each of mass 12 g the speed to each bullets is 16 cm/-1 then force…

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Q: As per Faraday's law of electromagnetic induction, an emf is induced in a conductor whenever: A.…

A: Given:-As per Faraday's law of electromagnetic induction, an emf is induced in a conductor

Q: A spaceship from a friendly, extragalactic planet flies toward Earth at 0.201 times the speed of…

A: V=0.201c λe=681 nm

Q: The given block of mass m can be pulled by a Force F that makes an angle 0 above the horizontal…

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Q: In an insulated vessel, 236 g of ice at 0°C is added to 565 g of water at 20.0°C. (Assume the latent…

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Q: A lightbulb in a home is emitting light at a rate of 120 watts. If the resistance of the light bulb…

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Q: c) A binary system exhibits a parallax of 0.0300". What is the minimum separation (in AU) the two…

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Q: A 2.8 kg body oscillates in SHM on a spring that, when extended 5.4 mm from its equilibrium…

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Q: In experiment 10, a group of students experimentally measured the rotational inertia of a hoop…

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Q: A ball is kicked at 30 degrees above the horizontal from a cliff of a height of 100 m with a speed v…

A: In the question its given that height of the cliff (h) is 100m, velocity of the ball uo is 40m/s and…

Q: A 429 kg roller coaster is at the bottom of a loop with a radius of 10m. If the speed at the bottom…

A: In circular motion,  Net force = centripetal force (mv^2/r)  V = speed at that point R = radius M =…

Q: X A 10 Kg object is raised to a height of 2m in 5s. What is the rate of work done? * 10 『- 10%メ 10…

A: Given, mass of an object, m = 10 kg height above the ground, h = 2 m time taken, t = 5 s

Q: Physics Freefall hope the answer are in clear writing

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Q: An object is released from rest on a planet that has no atmosphere. The object falls freely for 9.5…

A: Given data:  Initial velocity (Vi) = 0 m/s Height (h) = 9.5 m Time (t) = 1 s Required: The magnitude…

Q: Write a paragraph explaining what the Doppler Effect is and the different effects it has on the…

A: To explain Meaning of the Doppler effect Variation in Doppler effect due to movement of the source…

Q: If the beam attached to a hinge is 4 meters long and weighs 600 Newtons, and the sign weighs 400…

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Q: Light with wavelength 589 nm passes through crystalline sodium chloride. In this medium, find the…

A: wavelength of light in air, λo=589nmlet ,λ be the wavelength of light in NaCl

Q: A metal sphere is insulated electrically and is given a charge. If 50 electrons are added to the…

A: Given, no of electrons (n) = 50  e = - 1.6 x 10-19 C  As we know the charge formula, Q = ne

Q: What is the RMS speed of a CO2 molecule at 27.0° C? Sone useful information: Mcarbon = 12 g/mole and…

A: Given: The temperature of the gas is 27oC.

Q: 5. A billiard ball rolling across a table at 1.50 m/s makes a head-on elastic collision with an…

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Q: General Directions: Solve what are asked for in the following problems. Show complete solutions by…

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Distance and Speed

The speed, distance and time relation forms the basis of study of motion. You will need these concepts in the study of Mechanics. This concept is applicable for students who are studying the following courses –