I found the value for A which proved to be very simple, however the ones involving density are giving me headaches.

Thanks in advance....

Find the gravitational force that the earth exerts on a 10.0 kg mass if it is placed at the following locations. (a) at the surface of the earth; (b) at the outer surface of the molten outer core; (c) at the surface of the solid inner core; (d) at the center of the earth.

Consult the figure 12.9 in the textbook, and assume a constant density through each of the interior regions (mantle, outer core, inner core), butnot the same density in each of these regions. Use the values given below for average density for each region.

Assume the inner core has outer radius 1.2 × 106m, inner radius zero and density 1.3 × 104kg/m3, the outer core has inner radius 1.2 × 106m, outer radius 3.6 × 106 m and density 1.1 ×104 kg/m3, the total mass of the earth is mE = 5.97 × 1024kg and its radius is RE = 6.38 ×106m.

Two isolated, concentric, conducting spherical shells have radii R₁ = 0.450 m and R₂ = 1.50 m, uniform charges q₁ = +1.70 μC and q₂ = +2.30 μC, and negligible thicknesses. What is the magnitude of the electric field E at radial distance (a) r = 3.40 m, (b) r = 0.840 m, and (c) r = 0.360 m? With V = 0 at infinity, what is V at (d) r = 3.40 m, (e) r = 1.50 m, (f) r = 0.840 m, (g) r = 0.450 m, (h) r = 0.360 m, and (i) r = 0?

Tensors are mathematical objects that are needed in physics to define certain quantities. I have a couple of questions regarding them that need to be clarified:

Are matrices and second rank tensors the same thing?

If the answer to 1 is yes, then can we think of a 3rd rank tensor as an ordered set of numbers in 3D lattice (just in the same way as we can think of a matrix as an ordered set of numbers in 2D lattice)?

Is there a published theory that looks at all matter as occupying no space and only being felt because of its gravitational pull?

We've been taught in school that matter has mass and occupies space. I was just wondering if anyone tried to look at matter as having no physical reality...

In a thermally isolated environment, you add ice at 0°C and steam at 100°C. (a) Determine the amount of steam condensed (in g) AND the final temperature (in °C) when the mass of ice and steam added are respectively 84.0 g and 10.8 g.

(b)

Repeat this calculation, when the mass of ice and steam added are interchanged. (Enter the amount of steam condensed in g and the final temperature in °C.)

Part Q: A block of mass m moving due east at speed v collides with and sticks to a block of mass 2m that is moving at the same speed v but in a direction 45.0∘ north of east. Find the direction in which the two blocks move after the collision.

Express your answer as angle theta in degrees measured north of east.

A nonconducting sphere 1.6 m in diameter with its center on the x axis at x = 4 m carries a uniform volume charge of density ρ = 5.4 µC/m³. Surrounding the sphere is a spherical shell with a diameter of 3.2 m and a uniform surface charge density σ = -2 µC/m². Calculate the magnitude and direction of the electric field at the following locations.

(a) x = 4.7 m, y = 0
N/C î +  N/C ĵ

(b) x = 4 m, y = 1.5 m
N/C î +  N/C ĵ

(c) x = 2.0 m, y = 3.0 m
N/C î +  N/C ĵ

answer all te parts _the question is . What are the different techniques used by Mass-spectroscopes for ionization and detection of the required signal. What is ICP-MS ? What are its advantages over traditional MS.

In a famous experiment done at the end of the 19th century, two metal electrodes were placed in an evacuated glass tube. A high voltage was applied between them. By using an appropriate metal for the cathode (e.g., sodium or potassium), it was found that a current could be made to flow when the cathode was illuminated with blue light, but no current would flow when red light was used, no matter how bright the light. Einstein was able to explain this strange phenomenon, and as a result, this experiment was considered the first experimental demonstration of

A. the wave nature of light.

B. the particle nature of electrons.

C. the wave nature of electrons.

D. the particle nature of light.

Two 2.3 kg bodies, A and B, collide. The velocities before the collision are v → A = ( 34 i ̂ + 29 j ̂ ) m/s and v → B = ( 19 i ̂ + 1.6 j ̂ ) m/s . After the collision, v → A ′ = ( 4.0 i ̂ + 12 j ̂ ) m/s . What are (a) the x-component and (b) the y-component of the final velocity of B? (c) What is the change in the total kinetic energy (including sign)?

Assume that in the Stern-Gerlach experiment for neutral silver atoms, the magnetic field has a magnitude of B = 0.50 T. (a) What is the energy difference between the magnetic moment orientations of the silver atoms in the two subbeams? (b) What is the frequency of the radiation that would induce a transition between these two states? (c) What is the wavelength of this radiation, and (d) to what part of the electromagnetic spectrum does it belong?

The Terrible Tinkerer—an evil-doing engineer—has trapped a frightened citizen on a 700 kg horizontally oscillating platform. The effective spring constant of the oscillator is 200 N/m and the mass of the citizen, who understandably is clinging on to the platform for dear life, is 70.0 kg. It all started when the unsuspecting citizen stepped onto the platform while high upon a bridge. The trapped platform then broke away and began oscillating starting from rest +40.0 m from equilibrium carrying the unsuspecting citizen with it.

a) What is the angular frequency and frequency of the motion?

b) What is the period?

c) What are the amplitude and phase angle?

d) What is the total energy of the oscillator?

e) If it will take Spider-Man 9.20 seconds to arrive where will the platform & citizen be (location, x)?

f) What will be their velocity at 9.2 seconds in m/s and mph?

g) What is the maximum horizontal acceleration experienced by the citizen in g’s?

h) Spider-Man—being a good physicist—waits until the platform is at ? = +? again to carefully remove the citizen from the platform. How long after 9.20 seconds does he have to wait?

i) What is the period of oscillation after the citizen is removed?

j) What is the total energy of the oscillator after the citizen is removed?

Two resistors have resistances R(smaller) and R(larger), where R(smaller) < R(larger). When the resistors are connected in series to a 12.0-V battery, the current from the battery is 1.43 A. When the resistors are connected in parallel to the battery, the total current from the battery is 9.95 A. Determine the two resistances.

A 79.0-kg fullback running east with a speed of 5.20 m/s is tackled by a 97.0-kg opponent running north with a speed of 3.00 m/s.

(a) Explain why the successful tackle constitutes a perfectly inelastic collision.

This answer has not been graded yet.

(b) Calculate the velocity of the players immediately after the tackle.

(c) Determine the mechanical energy that disappears as a result of the collision.
J

Account for the missing energy.