Define Biot Number?

513

What is sonar?

505

Order the following categories of electromagnetic radiation from the lowest frequency to the highest? Fm radio, uhf tv, am radio, microwaves

491

What is black body and what are its characteristics? : quantum physics

470

Why have the electron and the proton the same charge whereas the proton is 1836 times heavier?

590

Giraffe in Arabic means "the highest of all." The height of a giraffe is an average of 5 m, its mass is about 800 kg and hooves is an area of approximately 625 cm2. Using a straw from a material nedeformabil a giraffe trying to drink water from a lake, not to condescend. What is the ratio of the minimum pressure to be applied giraffe, mouth, at the end paiului to drink water and pressure of giraffe on the ground. The density of water. g = 10 m/s2

1636

Explain what is cardiac output?

489

Tell me how many neutrons and how many protons are present in a single deuterium nucleus?

461

What is dispension of light?

532

Which particles/ rays do radioactive substances emit?

533

Explain what instrument is used to measure volume?

504

When a green colored object is illuminated by a green light it will appear as what color to the human eye?

507

Explain what is the opaque?

521

Laser is an acronym for what?

530

Find the physical quantity in units from the equation: (Force*Distance)/(Velocity*Velocity)

583