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Tomtit [17]
3 years ago
6

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. Given this information, how many

Physics
1 answer:
Juli2301 [7.4K]3 years ago
8 0
Don't need the mass (23), but only the atomic number (11). The ion has 1 electron stripped, 10 remaining.
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An object on the moon feels lighter than the same object on earth. which statement explains this phenomenon?
natka813 [3]

Answer:

B

Explanation:

cause

7 0
2 years ago
A catapult with a spring constant of 10,000 N/m is used to launch a target from the deck of a ship. The spring is compressed a d
Mnenie [13.5K]

Answer:

(C) 40m/s

Explanation:

Given;

spring constant of the catapult, k = 10,000 N/m

compression of the spring, x = 0.5 m

mass of the launched object, m = 1.56 kg

Apply the principle of conservation of energy;

Elastic potential energy of the catapult = kinetic energy of the target launched.

¹/₂kx² = ¹/₂mv²

where;

v is the target's  velocity as it leaves the catapult

kx² = mv²

v² = kx² / m

v² = (10000 x 0.5²) / (1.56)

v² = 1602.56

v = √1602.56

v = 40.03 m/s

v ≅ 40 m/s

Therefore, the target's velocity as it leaves the spring is 40 m/s

6 0
2 years ago
The process of thinking that involves considering an overall general idea or theory and drawing specific conclusions or making s
Zigmanuir [339]
<h2>Answer:</h2>

Deductive reasoning

<h2>Explanation:</h2>

The process of using pre-existing knowledge to make logical conclusions, make predictions and draw out explanations is called reasoning. Reasoning are basically of two types:

i. Deductive reasoning: This takes a general rule, idea, or theory as foundation and then proceeds from there to draw meaningful conclusions or predictions. For example;

           <em>  If a = 3                ----------------(i)</em>

<em>              And b = 5           ----------------(ii)</em>

<em>              Then 2a + 4b = 26 -------------(iii)</em>

From above, following from equations (i) and (ii), it can be concluded that (iii) should be true.

ii. Inductive reasoning: While deductive reasoning moves from a general rule to specific rule, inductive reasoning does the opposite - moves from specific to a general rule.

7 0
3 years ago
16 grams of ice at –32°C is to be changed to steam at 172°C. The entire process requires _____ cal. Round your answer to the nea
inysia [295]

Answer:12,352 cal

Explanation:

Given

to change 16 gm ice at -32^{\circ}C to 172^{\circ}C

First we need to take ice to 0^{\circ}Cthen change its state to water and then raises water temperature from 0 to 100^{\circ}C .

After it change water phase to steam and then raise its temperature to 172^{\circ}C

heat required(Q)=16\times 0.5\times \left ( 0+32\right )+16\times 80+16\times 1\times \left ( 100-0\right )+16\times 540+16\times 0.5\times \left ( 172-100\right )

Q=12,352 cal

4 0
3 years ago
How many of the identified objects are not accelerating? a race car going around a circular track at 150 mph a sky diver falling
Nonamiya [84]
A race car, sky diver.
3 0
3 years ago
Read 2 more answers
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