Olá, minha primeira vez aqui, queria muito poder entender estes exercícios mas não consigo, já fiquei 2 dias nisso e não entendo mesmo, não consigo resolver O volume do cilíndro é V=pi. r^2.h que tem como resultado 10048cm^3, não sei como fazer o resto, as aulas do professor são gravadas então não consigo perguntá-lo

When applying kirchhoff's rules, one of the essential steps is to mark each resistor with plus and minus signs to label how the electric potential changes from one end of the resistor to the other. the circuit in the drawing contains four resistors, each marked with the associated plus and minus signs. however, one resistor is marked incorrectly. which one is it?

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=