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Physics 101 Mechanics
April 2022
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Physics 101 Mechanics Q&A Archive of April 21, 2022

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April 21 of 2022

A firework is launched from ground level with speed 65m/s, at 22.62 degrees away from vertical and in the northern direction. At the instant that the firework reaches it's maximum height it explodes into four fragments which fly apart in a horizontal plane. The pieces are labelled N, S, W, E,…

What will happen to the pressure of the temperature is increased?

the HourGenerator block is very similar to SecondGenerator and MinuteGenerator. It generates the hour count i.e

A runner has completed a five-lap marathon with the following displacements: d1=6km, West; d2=7km, 40 degrees South of West; d3=9km, North; d4=4km, 30 degrees South of East; and d5=8km, 70 degrees North of East. How far is the runner from his starting position (magnitude and direction)?

using a 2" diameter dart drop tester from 26" high, how and or what do i need to to to get the same results using a 1.5" diameter dart drop tester.

A uniform beam of weight 2kN has forces and uniformly distributed loads acting on it as shown. It is supported by a fixed hinge support at A and a roller (sliding support) support at point B. The longer distributed load has a value of 800 N/m and the shorter has a value of 1,5kN/m. Determine…

Which of the following is NOT true? If the sum of all forces acting on a body is equal to zero, then it is both in linear and rotational equilibrium. If the line of action of a force passes through the pivot point, the body will have no angular acceleration. The torque…

Please answer this asap

A piece of ice weighing 100000 kg near the north pole moves to east with velocity 2m/s. Find the magnitude and direction of the coriolis force acting on this piece due to earths rotation

Draw a series circuit connecting a battery and four resistors with a total resistance of 15 Ω. The total current in the circuit should be 3 A.

Q10 You wish to deliver 95 ml of a viscous drug (η = 22×10−4 Pa s) through a needle of length 50 mm and with an internal radius of 0.36 mm. If a pressure difference of 66 kPa is maintained across the needle as the drug is delivered then how long will it take to deliver the 95 ml of fluid?…

What is the gauge pressure inside the container in the figure above? (to 2 s.f. and in kPa) (Patm = 101 kPa, rho_oil = 2100 kg m^-3)

Q6 You are testing a new tissue scaffold for use in treating large wounds. You have a cylindrical sample of the scaffold material that has a cross sectional area of 7.9×10−7 m2 and you apply a tensile force of 2.1 N. The length of the scaffold sample increases by 3.4%. What is the…

Q15 - 2 You can drain a tank of viscous fluid through your favorite hose in exactly 10 minutes. Sadly you lose your favorite hose and must use a spare hose which has twice the length and a diameter which is 12% less than your favorite hose. How long does it take to drain the tank with…

find the maximum shear stress and angle of twist generated in the drill bit of a drill machine which is used by a carpenter to carry out his daily routine work.The radius of the drill bit is 2mm and torque generated by the drill machine is 0.3 Nm.Drill bit is made up of steel having a shear…

A rocket is fired vertically starting from rest. Neglecting air resistance, what velocity will it attain in 68 s if its initial mass is 13 000 kg and fuel is burnt at the rate of 124 kg s−1, the gases being ejected at a velocity of 1950 m s−1 relative to the rocket? If the fuel is exhausted…

A planar object is bounded above by the curve $y_>=\frac{2}{1+x}$ and below by the line $y_<=\frac{x}{4}$ Assume that the object in homogeneous with constant areal mass-density$\sigma_0$ . (a)Determine the total mass of the object [HINTS: $dm = \sigma_0dxdy $. Do the integrals in two…

A planar object is bounded by the x and y axes, the curve $y=\frac{2}{1+x}$ and the line $x=e^3-1$ Assume that the object in homogeneous with constant areal mass-density . (a)Determine the total mass of the object [HINTS: $dm = \sigma_0dxdy $. Do the integrals in two (nested) steps. The…

What fraction of rest mass energy is converted from potential energy to kinetic energy when a particle comes from infinity to the event horizon of a black hole?

hydrogen atom is excited to the n = 4 level. Its decay to the n = 2 level is detected in a photographic plate What is the wavelength of the light photographed?

A firework is launched from ground level with speed 65m/s, at 22.62 degrees away from vertical and in the northern direction. At the instant that the firework reaches it's maximum height it explodes into four fragments which fly apart in a horizontal plane. The pieces are labelled N, S, W, E,…

What will happen to the pressure of the temperature is increased?

A uniform beam of weight 2kN has forces and uniformly distributed loads acting on it as shown. It is supported by a fixed hinge support at A and a roller (sliding support) support at point B. The longer distributed load has a value of 800 N/m and the shorter has a value of 1,5kN/m. Determine…

Please answer this asap

Q10 You wish to deliver 95 ml of a viscous drug (η = 22×10−4 Pa s) through a needle of length 50 mm and with an internal radius of 0.36 mm. If a pressure difference of 66 kPa is maintained across the needle as the drug is delivered then how long will it take to deliver the 95 ml of fluid?…

What is the gauge pressure inside the container in the figure above? (to 2 s.f. and in kPa) (Patm = 101 kPa, rho_oil = 2100 kg m^-3)

Q6 You are testing a new tissue scaffold for use in treating large wounds. You have a cylindrical sample of the scaffold material that has a cross sectional area of 7.9×10−7 m2 and you apply a tensile force of 2.1 N. The length of the scaffold sample increases by 3.4%. What is the…

Q15 - 2 You can drain a tank of viscous fluid through your favorite hose in exactly 10 minutes. Sadly you lose your favorite hose and must use a spare hose which has twice the length and a diameter which is 12% less than your favorite hose. How long does it take to drain the tank with…

A rocket is fired vertically starting from rest. Neglecting air resistance, what velocity will it attain in 68 s if its initial mass is 13 000 kg and fuel is burnt at the rate of 124 kg s−1, the gases being ejected at a velocity of 1950 m s−1 relative to the rocket? If the fuel is exhausted…

A planar object is bounded above by the curve $y_>=\frac{2}{1+x}$ and below by the line $y_<=\frac{x}{4}$ Assume that the object in homogeneous with constant areal mass-density$\sigma_0$ . (a)Determine the total mass of the object [HINTS: $dm = \sigma_0dxdy $. Do the integrals in two…

A planar object is bounded by the x and y axes, the curve $y=\frac{2}{1+x}$ and the line $x=e^3-1$ Assume that the object in homogeneous with constant areal mass-density . (a)Determine the total mass of the object [HINTS: $dm = \sigma_0dxdy $. Do the integrals in two (nested) steps. The…

What fraction of rest mass energy is converted from potential energy to kinetic energy when a particle comes from infinity to the event horizon of a black hole?

hydrogen atom is excited to the n = 4 level. Its decay to the n = 2 level is detected in a photographic plate What is the wavelength of the light photographed?