An astronaut is flying at a distance of 317kms from the center of a blackhole of mass 2E32 kg. From the point of view of the astronaut the flight lasts for 18.6 seconds. How long did it last from the point of view of an observer on Earth?

Q: The position vector of a 2.5 kg particle is given by r = 4.0 î +3.0 t ĵ, where r is in meters and t…

A: This problem can be solved using basic mathematical expressions for given physical quantities.

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A: a) Around x-axis the masses 1.2 and 2.5 kg does not contribute to the moment of inertia (As their…

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A: length = l1 = 10 m resistance = R1= 1.2 kΩ

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A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

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Q: Please help me with questio d), e) and f)? Thanks.

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Q: torque of 50 Nm producing a counterclockwise rotation is ap bout its axle. A frictional torque of 10…

A: GivenTorque applied to axle , τapplied=50 NmFrictional torque, τFrictional=10 Nmα=2 rad/s2

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A: Given data:  Mass of boy (m1) = 35 kg Mass of skateboard (m2) = 9 kg Initial velocity of boy (V1) =…

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A: the height of the ramp is given by h=1×sin15°=sin15° meters

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A: Given: Plasma frequency, ωp= 7.44 eV Damping frequency, Γ = 0.97 eV excitation frequency, ω=3.2eV To…

Q: If 40 cal of heat are added to a system while 20 J of work is done on the system, how would the…

A: Given: Heat added: dQ=40 cal=40×4184 J=167360 J Work done on the system dW=-20 J The work is done on…

Q: A 2.5 kg object undergoes a displacement Ar = 3.0 m î + 3.5 mĵ - 2.0 m ✩ along a straight line.…

A: Given: The mass of the object is 2.5 kg. The displacement of the object is 3i+3.5j-2k m. The force…

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Q: A current of 6.0 A in the 150-turn primary of an ideal transformer causes 12 A to flow in the…

A: Given data as per the question current in primary coil =6 A Turns in primary coil =150 Current in…

Q: Write the range of frequencies of electromagnetic waves which propagate through sky wave mode.

A: Range of frequencies of EM waves which propagate through sky wave mode is 3 MHz to 30 MHz

Q: Express the angular velocity of the second hand on a clock in the following units:

A: Expressing the angular velocity of the second hand on a clock in rad/s , deg/min and rev/hr.

Q: A current density of 8.50 x 10 A/m² exists in the atmosphere at a location where the electric field…

A: Given, The current density, J=8.15×10-3 A/m2 The value of the electric field, E=138 V/m

Q: makes an angle of 8 = 15.9° with the direction of th Je

A: Givenθ=15.9°

Q: A hockey puck is traveling to the left with a velocity of 2-m/s when it is struck by a hockey stick…

A: Momentum= mass × velocity = mv  Momentum is a vector quantity so it has both magnitude and velocity

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Q: O The temperature of a beaker of water is 113.4 F. What is this temperature when converted to…

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Q: If the spring shown in the figure below is compressed rather than stretched so that x = -xo,…

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Q: A wave travels from air (?air = 413 kg m−2s −1) into a liquid and with a density of 950 kg m−3 and…

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Q: vertical block-spring system on earth has a period of 6.0 s. What is the period of this same system…

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Q: ximize fuel effici

A: Given, The fuel efficiency E (in kilometres per litre) of a certain car driven at a speed v (in…

Q: Consider the reaction, n+³ He He + y. Parta) Find the amount of energy transferred to the 4He, also…

A: The given data we have:  mass of neutron: 1.008665 u mass of helium-3: 3.016029 u mass of helium-4:…

Q: A man enters a tall tower and notices a long pendulum that very nearly reaches from the ceiling to…

A: Given data:- The given hanging swings back and forth with a period of 14.0 s The given free…

Q: A concave mirror has a focal length of 15 cm. What is the magnification if the object's distance is…

A: Given, The focal length of the concave mirror (f) = -15 cm =-0.15 m  (Applying the sign convention)…

Q: Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates with…

A: a) Initial angular speed is given by ωi=angle rotatedtime taken=20×2π5=8π rad/sec angular…

Q: train whistle has a frequency of 500 Hz. The train is moving west at a speed of 30.0 m s−1 and you…

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Q: 4. The scatter plot shows the number of passengers at a major airport over a 15-year period from the…

A: At t=0 , P=55 million At t=11 , P=65 million  passangers in 11 years = area under graph  =…

Q: 37. Touch-Tone Phones On a Touch-Tone phone, each button produces a unique sound. The sound produced…

A: It is given that the sound produced is the sum of y=sin2πt and y=sin2πht. Thus, the expression for…

Q: Select the incorrect statement The cross product of two perpendicular vectors is zero. O Ā. (A x B)…

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Q: 3. 1) At this instant, car A travels along a straight path while car B travels along a circular…

A: 1) In vector notations, assuming the directions to right of page as x- axis and the up direction as…

Q: What is the wavelength (in nm) of a laser with an energy of (3.11x10^-19) J? Answer to 3 significant…

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Q: 15. A car is navigating a banked turn. As shown below, the road surface is tilted at an angle from…

A: It is given in the question that at speed v1, the car can navigate a turn with radius R without…

Q: 1. An object at infinity (or rather, very, very far away) is viewed through two consecutive nses.…

A: Concave lens A concave lens is one that bends a straight light beam away from the source and focuses…

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Q: A satellite has a mass of 250 kg. (mEarth = 5.97x1024 kg, rEarth = 6.38x106 m,  G = 6.67x10-11…

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Q: One of the highest power lasers in the world sits on a table in the General Research Lab Building at…

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Q: The position vector of a 2.5 kg particle is given by r=4.0 i +3.0² ĵ, where r is in meters and is in…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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Q: In the figure below, an iron bar sitting on two parallel copper rails, connected to each other by a…

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Q: The heating coil in an electric tea pot is made of nichrome wire with a radius of 0.275 mm. If the…

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Q: A 7.00 g bullet, when fired from a gun into a 0.90 kg block of wood held in a vise, penetrates the…

A: Given data  mass of the bullet m1=7.00g=7×10-3kg mass of the block of the wood M=0.90 kg bullet…