Hard crystals high melting points and electrical conductivity are properties of

in bohr's atomic theory when electron moves from one energy level to another energy level more distant from the nucleus energy i

Katyanochek1 [597]

No, it is the other way around. When an electron moves from one energy level to another energy level more distant from the nucleus, it gains, not emits energy. The closer it gets to the nucleus, the more energy it emits. If it is far from the nucleus, it gains more energy.

3 0

3 years ago

For the hypothetical reaction A → B, calculate the average rate of disappearance of A if the initial concentration of A is 0.91

marishachu [46]

Answer:

The right answer is 8.9 x 10^-3 M/min

Explanation:

A → B

-d [A]/dt = K [A]

ΔA/Δt = - (C2 -C1)/t2 - t1

= - (0.11 - 0.91)/90

= 8.9 x 10^-3 M/min

7 0

3 years ago

Tracy stands on a skateboard and tosses her backpack to her friend who is standing in front of her. Which best describes the acc

madreJ [45]

Answer:

A

Explanation:

It is less than the acceleration of the backpack because abs has a greater mass.

5 0

3 years ago

A golf club hits a stationary 0.05kg golf ball with and average force of 5.0 x 10^3 newtons accelerating the ball at 44 meters p

maxonik [38]

Answer: The magnitude of impulse imparted to the ball by the golf club is 2.2 N seconds

Explanation:

Force applied on the golf ball = $5.0\times 10^3 N$

Mass of the ball = 0.05 kg

Velocity with which ball is accelerating = 44 m/s

Time period over which forece applied = t

$f=ma=\frac{m\times v}{t}$

$t=\frac{0.05 kg\times 44m/s}{5.0\times 10^3 N}=4.4\times 10^{-4} seconds$

$Impulse=(force)\times (time)=f\times t = 5.0\times 10^3\times 4.4\times 10^{-4} seconds=2.2$ Newton seconds

The magnitude of impulse imparted to the ball by the golf club is 2.2 N seconds

7 0

3 years ago

A flat loop of wire consisting of a single turn of cross-sectional area 8.00 cm2 is perpendicular to a magnetic field that incre

Evgen [1.6K]

Complete Question

A flat loop of wire consisting of a single turn of cross-sectional area 8.00 cm2 is perpendicular to a magnetic field that increases uniformly in magnitude from 0.500 T to 1.60 T in 0.99 s. What is the resulting induced current if the loop has a resistance of $1.20 \ \Omega$