Answer:
514Hz
Explanation:
510 - unknown = 4Hz
unknown = 514 or 506
505 - unknown = numerous
unknown is most likely 514 because 1 beat that wouldve resulted from the 506 Hz isn't numerous.
b. solid
c. liquid
d. plasma
Answer:
plasma
Expl
This other guy said it was plasma
b. small tree and sapling
c. shrub
d. herb
This question comes along with four answer choices:
a) the thermal energy moving from the coffee to her tongue
b) the thermal energy moving from her tongue to the coffee
c) her coffee
d) her tongue
Answer: a) the thermal energy moving from the coffee to her tongue.
Explanation:
Heat, heat energy and thermal energy are terms to refer the same thing.
Heat is the kinetic energy of the molecules or particles in a substance wich is transferred from hot substances to cool substances.
In the example, the coffe is hot and Ixchelt's tongue is cool, so the heat is the thermal energy transferred from the hot coffe to Ixtchel's tongue.
The thermal energy (heat) always flows from the hot to the cold, never the other way around.
Answer:
A
Explanation:
A is the answer
Answer:
Explanation:
We shall apply conservation of mechanical energy
kinetic energy of alpha particle is converted into electric potential energy.
1/2 mv² = k q₁q₂/d , d is closest distance
d = 2kq₁q₂ / mv²
= 2 x 9 x 10⁹ x 79e x 2e / 4mv²
= 1422 x2x (1.6 x 10⁻¹⁹)² x 10⁹ /4x 1.67 x 10⁻²⁷ x (1.5 x 10⁷)²
= 3640.32 x 10⁻²⁹ /2x 3.7575 x 10⁻¹³
= 484.4 x 10⁻¹⁶
=48.4 x 10⁻¹⁵ m