(c) [3] The meteoroid that created the crater was spherical and made of rock, and it had an impact velocity of

5 km/s. Assuming that energy was conserved in the collision, what was the size of the meteoroid?

(d) [5] Comets have a density of one third the value of rocky meteoroids, but can travel three times as fast. If a comet the same size of the meteoroid had impacted and caused the crater, with a density of 1000 kg/m3 and an impact velocity of 15 km/s, what size crater would have been made? Would it be larger or smaller than that made by a rocky meteoroid?

(e) [3] Consider the material excavated by the impactor, the ejecta. Ejecta blankets are found on both Mercury and the Moon, but on Mercury, the ejecta is generally much closer to the crater compared to the Moon. Explain why this is

ps:

part a and b of this question for more background

(a) [1] Suppose on the Moon, a meteoroid creates a crater in the shape of a hemisphere with a radius of 1 km.
Calculate the mass of material excavated, assuming a density of 1920 kg/m3 for regolith.
answer :

m= 4.0x10^12 kg

(b) [1]Whenthemeteoroidmakesthecrater, the excavated material is raised vertically by a distance equal to the
radius of the crater, 1 km. Calculate the potential energy required to lift the material.
answer: 6.51 x 10^15 J

1. Two source, S1 and S2, are vibrating in phase and produce waves with a wavelength of 2.5 m. The two waves overlap at a nodal point. Calculate the smallest corresponding difference in path length for this point. [ans: 1.2m]

2. A point on the third nodal line from the center of an interference pattern is 35 cm from one source and 42cm from the other. The sources are 11.2 cm apart and vibrate in phase at 10.5Hz.
a) calculate the boyfriend of the waves [ans: 2.8cm]
b) calculate the speed of the waves [29cm/s]

3. Thomas Young showed that light passing through 2 parallel narrow slits produces a pattern of light and dark fringes. Did this support or contradict Newton's corpuscular theory of light? Explain your answer.

Ps. Plz explain your solutions so that I can follow up with these steps.

Two long, straight, parallel wires are separated by 0.50 m and lie in the X-Y plane. Wire “A” has a current of 1.4 A traveling in the -Y direction and wire “B” has a current of 6.3 A flowing in the +Y direction. What is the magnitude of the magnetic field at the midpoint between the two wires?

A. 4.5 µT

B. 2.5 µT

C. 1.2 µT

D. 3.9 µT

E. 0.98 µT

A rigid tank contains 3 kg of subcooled liquid H2O at 50°C. An electric element in the tank is turned on until the temperature rises to 95°C, where the H2O is now a saturated liquid on the verge of vaporizing. The tank is not well insulated, thus 10 kJ of heat are lost through its walls. Which is the correct energy balance for this process? Using the appropriate energy balance, determine the amount of electrical work, We, done during this process. If the process takes 5 minutes, what is the power rating of the electrical element in units of kW?

A -4.00 nC point charge is at the origin, and a second -5.00 nC point charge is on the x-axis at x = 0.800 mm.

a. Find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = 0.200 mm.

b. Find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = 1.20 mm.

c. Find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = -0.200 mm.

How long would it take from the time you feel an earthquake for it to reach another city 92.0 km away, if it shakes you with a frequency of 10 Hz and a has a wavelength of 600 m?

2.

1. Two trains (on separate tracks) travel toward each other, the first at 60.0 km/s and the second at 40.0 km/s. Both turn on their whistle, the first one emitting a frequency of 200 Hz and the second one emitting a frequency of 220 Hz. What frequencies do they each receive if the speed of sound in air is 330 m/s? Hint: Draw a diagram or do this one in steps. Is the source or the observer moving?

Design a line following robot by using AT89C51 microcontroller, DC motors and line sensors. Use Photo transistors and LEDS to design a line sensor. Use DC motos and attach DC motors to
Microcontroller by using H-Bridge IC or circuit. Use assembly language for programming. Draw the
model and simulate it. Show all the schematics and connections.

After Designing Line Follower, convert it into maze solver by using your own
algorithm. The robot should start and reach the end point in minimum possible time.maze solving

Code must be in assembly language along with the the proteus

Please solve this graduate classical mechanics question.

Q. What is the physical meaning of the so-called "generator" of infinitesimal canonical transformation? (You may consider rotation or translation.)

1 A) Sketch a typical graph of friction force acting on an object versus the applied force, which starts to move the object from rest, and indicate the static and the kinetic regions.

B) For a rigid object undergoing circular motion, show that the tangential acceleration for each point on the object is given by ?? = ??.

C) State the work-kinetic energy theorem with friction force acting on the system

A partially filled (plastic) kettle is used to boil water.

The kettle contains tap (temperature) water before it is switched on.

If the thermostat to switch off the kettle when it boils is faulty:

• Q2d: Explain the solution strategy which would allow you to calculate the time needed to bring water to the boil.
• Q2a: Detail all the assumptions needed to arrive at the solution, whether they relate to equations used (i.e., the theoretical basis) or any values which must be assumed for variables (or properties) in order for you to complete the solution.
• Q2b: Perform (a sample set) of calculations to demonstrate the solution strategy, ensuring you show all steps, substitution of values, calculations, final answer, and units (if applicable).

Q2c: Insert (clips) of figures, charts, tables for any data used in the solution. Resize these to fit in the space(s) provided.

In the absence of friction do we expect the final velocity of the cart to be affected by adding mass to it? Support your answer using energy conservation.

Give three examples of how Linux is used in distinctly different applications to illustrate its proliferation in a diverse range of modern application domains?

(For the case of the hexagonal boron nitride and tungsten diselenide, show your physics reasoning on why there is a shift in the phonon mode as the thickness of the materials reduces?)

If thickness of material lattice is reduced , the raman shift increases. So, there is shift in phonon mode as the thickness of materials reduces.

can someone please explain the physics reasoning of this statement

Describe, using equations, if appropriate, the compromises you will make when you change the aperture half angle in an SEM. You should discuss the signal intensity, the depth of field, aberrations and the resolution.