Questions Answered

Ektoras:
Group Title
Suppose that the galA gene was regulated by a repressor. Which of the following would be correct? Check all that apply.
1) The repressor for…
 updated one year ago
 11 replies
 2 Medals

aggarwalkunal19:
Group Title
An electron falls from the conduction band of silicon (Si) to the valence band. The band gap of Si is 1.1 eV. What is the wavelength of the …
 updated one year ago
 3 replies
 No Medals Yet

KunoiSlayr:
Group Title
Electron exhibiting a particle wavelength of 9.88 x 109 are emitted from hydrogen atoms after interaction with high energy photons. Assumin…
 updated one year ago
 10 replies
 1 Medal

muphi:
Group Title
Determine the minimum potential that must be applied to a proton so that, on interaction with a hydrogen atom, it can excite the ground stat…
 updated one year ago
 1 reply
 No Medals Yet

bandu:
Group Title
Gallium nitride (GaN) is a semiconductor with a bandgap Eg=3.2 eV. Calculate the absorption edge of GaN. Express your answer in units of m.
 updated one year ago
 1 reply
 No Medals Yet

KunoiSlayr:
Group Title
A block of mass m1 = 25 kg rests on a wedge of angle θ = 49∘ which is itself attached to a table (the wedge does not move in this problem). …
 updated one year ago
 3 replies
 1 Medal

Abc23:
Group Title
An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant …
 updated 10 months ago
 5 replies
 No Medals Yet

yekanth:
Group Title
CONICAL PENDULUM
 updated one year ago
 2 replies
 1 Medal

xvc:
Group Title
A person is riding on a flatcar traveling at a constant speed v1= 15 m/s with respect to the ground. He wishes to throw a ball through a st…
 updated one year ago
 4 replies
 1 Medal

UnkleRhaukus:
Group Title
Tension in a rope
 updated one year ago
 50 replies
 1 Medal

tini12:
Group Title
Two blocks with masses m1 and m2 such that m1<<m2 are connected by a massless inextensible string and a massless pulley as shown in the figu…
 updated one year ago
 27 replies
 No Medals Yet

celzy:
Group Title
What is the magnitude of the energy of a bond formed between a potassium (K+) cation and an iodide (I−) anion? The ionic radii of K+ and I−,…
 updated 2 months ago
 9 replies
 No Medals Yet