Determine the starting position of a 15 kg block in order to have it travel 8 meters up a 30 degree ramp with a constant force applied of 8N. Assume Us and Uk both equal 0.30.

Part 1: calculate acceleration of the box up the ramp then determine velocity needed at the bottom of the ramp for the box to travel up 8m with 80N force applied.

Part 2: calculate initial position of the box needed to achieve velocity at the bottom of the ramp calulate in part 1.

Part 3: Predict whether or not the box will slide down after stopping at 8m up the ramp.

Consider the equilibrium reaction: A2(g)-->2A(g), A = acetic acid and A is treated as ideal gas. Gas A was evaporated (got dimerized, molar mass=120 g/mol) in a container of volume 21.45 cm3at 437K and at an external pressure of 101.9 kPa, and the container was then sealed. The mass of acid present in the sealed container was 0.0519 g. The experiment was repeated with the same container but at 471 K, and it was found that 0.0380 g of acetic acid was present. Calculate the equilibrium constant for the dimerization of the acid in the vapour and the enthalpy of vaporization.

Determine the ratio of the relativistic kinetic energy to the nonrelativistic kinetic energy (1/2mv²) when a particle has a speed of (a)2.61 � 10^-3c. and (b) 0.973c.

Please explain it step by step.

The magnetic field 44.0 cm away from a long, straight wire carrying current 3.00 A is 1360 nT.

(a) At what distance is it 136 nT?
(No Response) cm

(b) At one instant, the two conductors in a long household extension cord carry equal 3.00-A currents in opposite directions. The two wires are 3.00 mm apart. Find the magnetic field 44.0 cm away from the middle of the straight cord, in the plane of the two wires.
(No Response) nT

(c) At what distance is it one-tenth as large?
(No Response) cm

(d) The center wire in a coaxial cable carries current 3.00 A in one direction, and the sheath around it carries current 3.00 A in the opposite direction. What magnetic field does the cable create at points outside the cables?
(No Response) nT

write a one page summary about robotics. This summary should include a brief description of the topic, important terminology, and why it is important to know and understand this topic. The summary should use a minimum of three sources. The sources may be from professional magazine articles (such as SC Magazine, CIO, Computer World).

Please paste the link to the source.

In a demolition derby, a 600kg Audi is traveling at 15m/s 30 degrees west of south. A 700 kg BMW is traveling at 10 m/s 40degrees north of east. They collide. After the collation, the Audi is redirected to 20 degrees north of wests and the BMW is redirected to 50 degrees south east. solve for velocity

The better resolution obtained with a high-numerical-aperature objective is accompanied by reduced contrast and depth of field. Why?

A cannon is elevated at an angle of 30 degrees and fires a cannonball with a speed "v₁". The Cannon is on top of a cliff with a height of "h". Given v₁ and h, determine:

a) The speed of the cannoball when it is at its maximum height.

b) The speed of the cannonball just before hitting the ground.

c) The angle the cannonball's velocity makes with the horizontal just before hitting the ground.

d) The horizontal distance the ball travels before hitting the ground.

e) The time the cannonball is in the air.

6. A plane electromagnetic wave with magnetic field amplitude 0.02 T is propagating through a vacuum.

1. What is the electric field amplitude?                                B) What is the magnitude of the Poynting vector?

C. If the wavelength is 500 nm what is the wave frequency and the energy of a single photon?

D. How many of these photons must pass through a square meter each second to yield the power flux calculated in part B?

A parallel-plate capacitor with plate separation of 1.0 cm has square plates, each with an area of 6.0 × 10 -2 m 2. What is the capacitance of this capacitor if a dielectric material with a dielectric constant of 2.4 is placed between the plates, completely filling them? ( ε 0 = 8.85 × 10 -12 C 2/N ∙ m 2)

A)1.3 × 10-12 F

B)1.3 × 10-10 F

C)64 × 10-14 F

D)15 × 10-12 F

E)15 × 10-14 F

explain why the signal enhancement can result in a transient NOESY experiment. (hint: you might find it easier to answer this question if you draw an energy diagram)  

A sled slides without friction down a small, ice-covered hill. If the sled starts from rest at the top of the hill, its speed at the bottom is 8.20 m/s. (a) On a second run, the sled starts with a speed of 2.80 m/s at the top. When it reaches the bottom of the hill, is its speed 11.0 m/s, more than 11.0 m/s, or less than 11.0 m/s?

more than 11.0 m/s

equal to 11.0 m/s

less than 11.0 m/s

Explain.

(b) Find the speed of the sled at the bottom of the hill after the second run. m/s

5.) Most homes have an outdoor faucet to which they can attach a standard 3/4 inch (diameter) garden hose. When it is attached to a standard garden hose, Fred's outdoor faucet delivers water at a rate of 7.6 feet/sec. In order to water a larger area, Fred splits his standard hose into three 1/2 inch lines. If the water is distributed through all of the 1/2 inch hoses equally, what is the volume flow output of each of the 1/2 inch lines.

6.) Oil is flowing through a pipeline at a speed of 1.44 m/s. If the diameter of the pipe is 0.86 m, what is the volumetric flow rate?

7.) The air above an airplane wing moves faster than the air below it. A certain airplane wing is 35 meters by 3.1 meters. The wind speed above the wing is 260 m/s and below it is 223 m/s. Assuming that the elevation and air density (1.29 kg/m3) are approximately the same at these two points, what is the pressure difference caused by the wind speeds?

8.) A fountain is designed to spray a column of water 9 m into the air. What minimum velocity must the water have exiting the nozzle in order to reach the desired water height?

9A.) A hand-pumped water gun is held at height of 1.3 m above the ground. The water stream lands 8.7 meters away. What is the exit velocity of the stream?

9B.) What is the gauge pressure of the gun's reservoir, assuming the velocity of the water is zero and doesn't change height before leaving the reservoir?

10.) A large dam has a hole that is 42 meters from the top. If the water in the reservoir is descending at a rate of 0.69 m/s, how fast is the water exiting the hole?

1- What is the difference between energy and intensity as far as light waves are concerned? How would you change the energy? How would you change the intensity? Are these changes independent of one another? Why or why not?

a- Discuss what changes you might expect to see if the energy of the light wave was changed for the double slit experiment. Why?

b- Discuss what changes you might expect to see if the intensity of the light wave was changed for the double slit experiment. Why?

A Rail Gun uses electromagnetic forces to accelerate a projectile to very high velocities. The basic mechanism of acceleration is relatively simple and can be illustrated in the following example. A metal rod of mass m and electrical resistance R rests on parallel horizontal rails (that have negligible electric resistance), which are a distance L apart, as shown in (Figure 1). The rails are also connected to a voltage source V, so a current loop is formed.

The vertical magnetic field, initially zero, is slowly increased. When the field strength reaches the value B0, the rod, which was initially at rest, begins to move. Assume that the rod has a slightly flattened bottom so that it slides instead of rolling. Use g for the magnitude of the acceleration due to gravity.

Find μs, the coefficient of static friction between the rod and the rails.

Express the coefficient of static friction in terms of variables given in the introduction.