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Margaret [11]
3 years ago
14

What is the difference between mechanical digestion and chemical digestion in the mouth

Physics
2 answers:
Phoenix [80]3 years ago
4 0
Mechanical digestion is chewing, and chemical digestion is the saliva in your mouth breaking down food.

STatiana [176]3 years ago
3 0
Mechanical digestion is where the food is physically broken down into smaller pieces, such as in the mouth. Chemical digestion is where the food us chemically broken down into subtomic particles , starting with the saliva in the mouth and continuing throught the small intestine.
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Assume that a gravitational anomaly in the solar system has shifted a field of asteroids into Earth’s orbit, and the field is no
Mandarinka [93]

Answer:

An asteroid is a minor planet of the inner Solar System. Historically, these terms have been applied to any astronomical object orbiting the Sun.

7 0
2 years ago
Lonnie pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to
suter [353]

Answer:

B) 20N.s is the correct answer

Explanation:

The formula for the impulse is given as:

Impulse = change in momentum

Impulse = mass × change in speed

Impulse = m × ΔV

Given:

initial speed  = 40m/s

Final speed = -60 m/s (Since the the ball will now move in the opposite direction after hitting the bat, the speed is negative)

mass = 0.20 kg

Thus, we have

Impulse = 0.20 × (40m/s - (-60)m/s)

Impulse = 0.20 × 100 = 20 kg-m/s or 20 N.s

4 0
3 years ago
The periodic table arranges elements by increasing _________.
Olegator [25]

Answer:

Atomic number

Explanation:

Hope it helps you in your learning process.

4 0
3 years ago
Can someone please help!!
frosja888 [35]

Answer:

Weight needed to balance the bar is 8.5N

Explanation:

Given the weight of the bar is 8N

The length of the bar is 5m

The weight of the bar will be uniformly distributed over the entire span. We will consider this as a point load acting in the middle of span length, which is at a distance of 2.5m from both ends.

Now applying momentum equation about balanced load we get, (see attachment)

\sum m_i=0\\2(m)+8(1)-8(0.5)-7(3)=0\\2m+8-4-21=0\\2m-17=0\\2m=17\\m=\frac{17}{2}=8.5\\So,\ m=8.5N

7 0
2 years ago
A basketball player shoots toward a basket 5.6 m away and 3.0 m above the floor. If the ball is released 1.8 m above the floor a
vaieri [72.5K]

Answer:

9.58 m/s

Explanation:

x = 5.6 m

y = 3 m

θ = 60°

Let u be the initial velocity of projection.

The general equation of projectile path is given by

y = x tan\theta -\frac{gx^{2}}{2u^{2}Cos^{2}\theta }

3 = 5.6\times tan60 -\frac{9.8\times 5.6 \times 5.6}{2\times u^{2}Cos^{2}60}

\frac{614.66}{u^{2}}=6.7

u = 9.58 m/s

thus, the velocity of projection is given by 9.58 m/s.

7 0
3 years ago
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