when firing a proton (for example) to an atomic nucleus, from a distance D, the deflection angle of the proton ? to the type of changes atomic nuclei? or always constant?

Please answer the following:

How does the Heimlich Maneuver mimic forced expiration?

At one time it was fashionable for women to wear corsets to cinch in their waistlines. These corsets would be laced tightly around the midsection. -Describe how wearing a corset could affect pulmonary ventilation and alveolar ventilation rate. Include Boyle’s law, as well as the pressures and physical structures that are involved in ventilation in your answer.

Hydrogen bonding between water molecules is essential for lung expansion to occur but also increases resistance during inspiration. Explain this contrast by describing the locations and how hydrogen bonding plays a positive and negative role in ventilation.

An object is placed 35.5 cm to the left of a converging lens of focal length 18.8 cm. A second lens, which is diverging and has a focal length of -88.8 cm is placed at a certain distance d to the right of the first lens.

A) where is the image of the object formed by the first lens and what is its magnification?

B) If the distance d=53.6 cm, where is the final image of the object? What are the properties of the image?

C) If the distance d=25.9 cm, where is the final image of the object? What are the properties of the image?

D) If in part B the lenses are reversed, where is the final image of the object and what are the properties of the image?

During the Apollo XI Moon landing, a retroreflecting panel was erected on the Moon's surface. The speed of light can be found by measuring the time it takes a laser beam to travel from Earth, reflect from the panel, and return to Earth. If this interval is found to be 2.505 s, what is the measured speed of light? Take the center-to-center distance from Earth to Moon to be 3.84 ? 108 m. Assume that the Moon is directly overhead and do not neglect the sizes of the Earth and Moon.

When landing poorly from a jump, your leg is likely to break at a point just above the ankle where the cross-sectional area of the bone (the tibia) is smallest. The tibia has a radius of 0.70.7cm. A bone will fracture when the compressive stress on it exceeds 130130MPa.

Your intrepid physics instructor (mass 6060kg) jumps from a desktop of height 1.21.2m onto a concrete floor, landing evenly on two legs. How much should she bend her knees to avoid breaking bones? Specifically, what is the minimum stopping distance ddsuch that the stress on the tibia during her landing is sufficiently low that it will not break? Give your answer in cm.

Notice that landing with stiff knees greatly decreases this stopping distance and is thus a really bad idea.

A Sweaty Weight Lifter

Due this Friday, Dec 4 at 11:59 pm (EST)

In exercising, a weight lifter loses 0.142 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.38E+5 J. Assuming that the latent heat of vaporization of perspiration is 2.45E+6 J/kg, find the change in the internal energy of the weight lifter.

The work function for lead is 4.14 eV.

(a) Find the cutoff wavelength for lead.
nm

(b) What is the lowest frequency of light incident on lead that releases photoelectrons from its surface?
Hz

(c) If photons of energy 5.80 eV are incident on lead, what is the maximum kinetic energy of the ejected photoelectrons?
eV

6. A 600 N person sits on a 50 N sled. The coefficient of static friction is 0.14. How much force is needed, respectively, to start the motion by pushing [A] and pulling [B] at an angle of 30°? (Rounding to the nearest integer)

A highway curve with a radius of 450 m is banked properly for a car traveling 80 km/h. If a 1560- kg Porshe 928S rounds the curve at 250 km/h, how much sideways force must the tires exert against the road if the car does not skid?

A factory worker pushes a crate of mass 30.7 kg a distance of 5.00 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.26.

a)What magnitude of force must the worker apply?

b)How much work is done on the crate by this force?

c)How much work is done on the crate by friction?

d)How much work is done by the normal force?

e)How much work is done by gravity?

f)What is the total work done on the crate?

100 kg of R-134a at 200 kPa are contained in a piston–cylinder device whose volume is 12.766 m³. The piston is now moved until the volume is one-half its original size. This is done such that the pressure of the R-134a does not change. Determine the final temperature and the change in the total internal energy of R-134a. Use data from the steam tables.

The final temperature is  °C.

The total change in internal energy is  kJ/kg.

A 330 mLmL soda can is 6.5 cmcm in diameter and has a mass of 21 gg . Such a soda can half full of water is floating upright in water.

What length of the can is above the water level?

(a) A toy car1 has a mass of 1.6 kg and is moving with a velocity of 6.0 m/s to the right. It collides with a second car2 (mass 2.4 kg). The cars stick together. After the collision, both cars move with a velocity of 1.5 m/s to the left.

(a) How fast and in what direction was car2 traveling before the collision?
(b) Calculate the total kinetic energy of the system before and after the collision.