A bird flies 10 miles south, turns and flies 15 miles east. What distance did it fly.

A fourth-grade teacher wants to ensure students understand the life cycle process of plants. The teacher decides to incorporate

Annette [7]

Answer:

There are several options that the teacher can use to incorporate the concept into students' understanding.

Explanation:

1. The students can draw all the plants that they know.

2. Children can be asked to bring the flowers to school so that they can identify the plants themselves.

3. The children can plat the flowers in makeshift pots and then take the best plants and transplant them in the garden or elsewhere.

4. The children can take occasional trips and observe and record any changes to the plants.

4. The teacher can ask the students to draw the flowers and emphasize on the productive parts like the stamens, leaves, pistils, stems.

4 0

2 years ago

The charged particles in the beams that Thomson studied came from atoms. As these particles moved away from their original atoms

aalyn [17]

The question to the above information is;

What is the best use of an atomic model to explain the charge of the particles in Thomson's beams?

Answer;

An atom's smaller negative particles are at a distance from the central positive particles, so the negative particles are easier to remove.

Explanation;

-Atoms are comprised of a nucleus consisting of protons (red) and neutrons (blue). The number of orbiting electrons is the same as the number of protons and is termed the "atomic number" of the element.

J.J. Thomson discovered the electron. Atoms are neutral overall, therefore in Thomson’s ‘plum pudding model’:

atoms are spheres of positive charge
electrons are dotted around inside

5 0

2 years ago

Read 2 more answers

A man claims that he can hold onto a 15.0-kg child in a head-on collision as long as he has his seat belt on. Consider this man

suter [353]

Answer:

F= 5195.625 N

Explanation:

To obtain the force needed to hold the child, we need to know the aceleration in which the car is breaking.

Aceleration is equal to velocity divided by the time of breaking

In international system, velocity [m/s] is

v= (62 mi/h)*(1609 m/mi)*(1 h/3600 s)

v= 27.71 m/s

Now, we part the velocity by the time that is 0.08 seconds

a= v/t= (27.71 m/s)/(0.08 s)

a= 346.375 m/ $s^{2}$

The force in agreement with the Newton's second law is

F=m*a = 15 Kg*346.375 m/ $s^{2}$

F= 5195.625 N

(Note: 1 N = 1 Kg*m/ $s^{2}$ )

3 0

2 years ago

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!

drek231 [11]

I would say true. If you are calculating using vectors than it would need both...

4 0

2 years ago

Read 2 more answers

The rotor of an electric motor has an angular velocity of 3600 rpm when the load and power are cut off. the 125-lb rotor, which

velikii [3]

Answer:

θ '= 4975 rev

Explanation:

For this exercise let's use the relationship between work and the change in kinetic energy

W = ΔK

the expression for work is

W = - τ Δθ

where the negative sign indicates that the torque is in the opposite direction to rotation

kinetic energy

K = ½ I w²

we substitute

- τ Δθ = 0 - ½ I w²

θ = $\frac{1}{2} \ \frac{I w^2}{\tau}$

if we approach the rotor to a cylinder with an axis of rotation through its center

I = ½ m r²

we substitute

θ = ½ (½ m r²) $\frac{w^2}{\tau}$

How the measurements are in the English system, the weight

W = m g

m = W / g

let's reduce to the english system

w = 3600 rev / min (2pi rad / 1rev) (1 min / 60s) = 376.99 rad / s

r = 9 in (1 ft / 12in) = 0.75 ft

let's calculate

m = 125/32 = 3.91 slug

θ = ¼ 3.91 0.75² 376.99² / 2.5

θ = 3.126 10⁴ rad

let's reduce to revolutions

θ’= 3.126 10⁴ rad (1rev / 2π rad)

θ’= 4974.9 rev

θ '= 4975 rev

6 0

3 years ago