A 1.6 kg breadbox on a frictionless incline of angle ? = 38 ? is connected, by a cord that runs over a pulley, to a light spring of spring constant k = 100 N/m, as shown in the figure. The box is released from rest when the spring is unstretched. Assume that the pulley is massless and frictionless. (a) What is the speed of the box when it has moved 10.6 cm down the incline? (b) How far down the incline from its point of release does the box slide before momentarily stopping, and what are the (c) magnitude and (d)direction of the box's acceleration at the instant the box momentarily stops?

If for some reason, an Astrophysics graduate decides to shift to Finance will he/she be in a better position (given his/her overspecialization) to make a transition compared to his/her counterparts who've been doing Analytical/Observational Astrophysics?

Part A (1.5 pts) Circle the letter of the phrase that most accurately completes the sentence.

When the current in the circuit below increases from 0.50 Io to Io the emf induced in the inductor acts in the:

1. the same direction as ?? and the energy stored in the inductor is 2x the initial value

2. the opposite direction to ?? and the energy stored in the inductor is 2x the initial value.

3. the same direction as ?? and the energy stored in the inductor is 4x the initial value.

4. the opposite direction to ?? and the energy stored in the inductor is 4x the initial value.

At what flow rate might turbulence begin to develop in a 0.280 m diameter water main? Assume a 20°C temperature and a Reynolds number of 2000. (Use 1.005 10-3 (N/m2) · s for the viscosity of water.)

I require a software to simulate Fluid simulation with the capability of supporting vacuum simulation. My requirements are that all numbers must reflect their real counterparts almost exactly. For example I need to mix Fluid, Air and Vacuum.

I have tried RealFlow but it doesn't support Vacuum.

Any body knows any software for this?

A projectile proton with a speed of 1400 m/s collides elastically with a target proton initially at rest. The two protons then move along perpendicular paths, with the projectile path at 74

You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 45° from the edge of the building with an initial velocity of 17 m/s and lands 67 meters away from the wall. How tall, in meters, is the building that the child is standing on?

A baseball pitcher throws a ball horizontally at a speed of 40.4 m/s. A catcher is 18.4 m away from the pitcher. Find the magnitude, in meters, of the vertical distance that the ball drops as it moves from the pitcher to the catcher. Ignore air resistance.

m

Consider eight of the ions Cl? and Na+ in a crystal lattice of common salt. The ions are located at the vertices of a cube measuring 2.82

By what potential distance must an electron (m0=9.11*10^-31 kg), be accelerated to have wavelength of 5.47*10^-12 m?

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0? above the horizontal, some of the tiny critters have reached a maximum height of 58.7cm above the level ground.

Part A

What was the takeoff speed for such a leap?

Part B

What horizontal distance did the froghopper cover for this world-record leap?

Discuss how obesity affects the center of gravity and provide examples with calculations.

0. Why does the bandwidth of the amplifier play a role in determining the reso- lution of the system?

A red ball is thrown down with an initial speed of 1 m/s from a height of 26 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 1 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s².

What is the speed of the red ball right before it hits the ground?

How long does it take the red ball to reach the ground?

What is the maximum height the blue ball reaches?

What is the height of the blue ball 1.9 seconds after the red ball is thrown?

How long after the red ball is thrown are the two balls in the air at the same height?

35% of the heat released from burning fuel in a campstove actually goes to heating a pot and its contents. You start with 1.3 kg of ice at -17 °C, 1.1 L of water at 22 °C, and a 360 gram aluminum pot at 28 °C. The ice and water are put into the pot and the system is heated to 100 °C with 22% of the liquid boiling away. The specific heat of aluminum is 0.22 cal/g-°C. The specific heat of ice is 0.5 cal/g-°C. One gram of fuel produces 46000 J when it is burned.

HINTS: Consider each part (ice, water, and pot separately)

HINTS: The given % that boils away is a combination of the melted ice and the water.

HINTS: Fuel doesn't come into play yet

1. How much heat is required to go into the pot and water?