How and what is the best way to learn for Experimental Physics I (mechanics, waves, thermodynamics) as a freshman who last took physics six years ago? I understand the formulas, what happens, and what comes into effect, but I can't solve the problems myself. I got the book "Physics for Dummies." Any other tips and…
Newton once mistakenly assumed the existence of so-called gravity. Supposedly because an apple fell on his head. It is often claimed that every mass has a force of attraction and attracts other masses. However, if that were the case, light, i.e. photons, would not be swallowed by black holes because light has no mass. As…
Does anyone happen to know what kind of "light bulb" this is? I have an exam soon, and the pictures generally show experiments that will be coming up. However, this part belongs to the topic of "light bulbs," but I don't know exactly what kind of bulb it is. Is it one with a filter…
I have given this task here; A small conductor loop located at the origin of the coordinate system has a magnetic dipole moment vec m_1 in the x-direction. At the point vec r = (a, 0, 0) lies a small paramagnetic body with magnetic susceptibility X_mag. and volume V. The loop is so small that…
An empty, open freight wagon (length L = 10 m, mass M0 = 6,000 kg, speed v0 = 18 km/h) rolls without propulsion under a loading device, where sand continuously falls vertically from a large storage silo onto the loading area. The sand flow rate is α = 1,500 kg/s. (a) First, give the general…
Good evening in the evening We'll start directly with the material. Four moles of an ideal gas are expanded from the volume V1 to the volume V2 = 2 V1. (a) What is the work done by the gas during isothermal expansion (T = 400 K) and what is the change in the internal energy…
Time is running out… Task: "There are 0.5 liters of water in a glass at a temperature of T2 = 20◦C. a) How much heat must be removed from the water to cool it to the temperature T1 = 5◦C? Note: For liquid water, the specific heat capacity is c_water = 4.2 Jg−1K−1 . The…
Consider the physical pendulum shown in the figure, which consists of a thin rod of length l. Its total mass m is distributed evenly along its length. Calculate the moment of inertia with respect to the axis of rotation passing through the suspension point shown (distance l/3 from the upper end). (b) Derive the equation…
Hello community, I was given a complex problem in my physics lecture on the topic of shear and strain. A specific example involves a force acting on one side of a cube fixed underneath. This force has x, y, and z components, so there are normal stresses in the z-direction and also shear or shear…
Hello, I have a question about the physics of angled throwing. When throwing at an angle, you can divide the force into x and y components. The magnitude of the two components, \/x² + y²\, gives me the final resultant force in the direction of the throw. But if we're talking about the total force…
I urgently need a photodiode that operates in the 670 nm wavelength range and comes with a calibration curve (A/W) or quantum efficiency data so that I can use the measured photocurrent to determine the illuminance (mW/cm^2), i.e. the sum of the photon energy over a unit of time per area. Does anyone have a…
And here we go again An RCL resonant circuit consists of an inductor with L = 40 mH and a resistor with R = 10 Ω. The resonant circuit has a resonant frequency of f = 100 Hz. a) Calculate the capacity C. b) Now, this resonant circuit is excited externally with a natural frequency…