Recent content by salsabel

Can some help me to solve this question I have no idea where to start a) What is the physical significance of the intercept of the graph with the frequency axis (x-axis)? b) What is the physical significance of the intercept of the graph with the kinetic energy axis (y-axis)? c) Use the...

In 1991, hikers found the frozen remains of a man in a glacier in the Alps, near the Austrian-Italian border. Carbon-14 analysis of tissue samples taken from the body revealed that the ratio of carbon-14 was 52.7% of what it was originally. Calculate the age of the body. A formula to...

a) Calculate the average binding energy per nucleon in the deuterium nucleus. b) The energy that binds an orbiting electron to the hydrogen nucleus is 13.4 eV. Calculate the ratio of the binding energy per nucleon to the binding per electron in deuterium. Which particle is held more tightly...

thank you

Fission is a process in which a nucleus splits into two parts that are roughly the same size of the original nucleus. In fusion, two nuclei fuse, or combine, to form one nucleus. These reactions seem to be opposite to each other and yet both release large amounts of energy. Explain why this is...

i mean why curves in the ways often banked?

What are the physics use of edges on the curve roads? it is some thing relates to the acceleration like when the car impact them the acceleration of the car decreasing that's all what i got

thats what i got suppose the wavelength= 1cm = 1*10^-9 and m= 1 when d= 2*10^-6 m/line theta= 0.029 when d= 10^-6 theta= 0.057 that's all what i got

You find two unlabelled diffraction gratings in your lab. From purchase records, you know that one grating has 5000 lines/cm, while the other has 10 000 lines/cm. Given the following equipment, describe how you would determine which is the grating with 10 000 lines/cm: • Red laser • detection...

i just want to know if these are the correct equations because I'm little confusing about the first one does he mean the time or the distance?

“proper” length A spaceship travels past a planet at a speed of 0.80 c as measured from the planet’s frame of reference. An observer on the planet measures the length of a moving spaceship to be 40 m. a) How long is the spaceship, according to the astronaut? b) At what speed would the...

thanks it makes sense to me

An astronaut traveling at 0.90c, with respect to Earth, measures his pulse and finds it to be 70 beats per minute. a) Calculate the time required for one pulse to occur, as measured by the astronaut. b) Calculate the time required for one pulse to occur, as measured by an Earth-based...

The dense atmosphere on the planet Venus makes Venus the hottest planet in the solar system, even hotter than Mercury the closest planet to the Sun. suggest an explanation for this anomaly that involves the electromagnetic spectrum. - Electromagnetic waves travel slower in denser mediums, and...

Which of the following colours would you expect to see near the bottom of a soap bubble, red or blue? this is my solution If the thickness of the soap bubble is much smaller than the wavelength of light, the result is destructive interference (dark color). The thickness required to produce...