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Iteru [2.4K]
3 years ago
6

_______ are different forms of a single element. A) Atoms B) Elements C) Ions D) Isotopes

Physics
2 answers:
KiRa [710]3 years ago
8 0
D they have the same number of protons but a different number of neutrons.
ELEN [110]3 years ago
7 0
The answer is D. Isotopes.
Hope that helped.

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This is a problem about a child pushing a stack of two blocks along a horizontal floor. The masses of the blocks, and the coeffi
Rufina [12.5K]

Answer:

 N = 23.4 N

Explanation:

After reading that long sentence, let's solve the question

The contact force is the so-called normal in this case we can find it by writing the translational equilibrium equation for the y axis

            N - w₁ -w₂ =

            N = m₁ g + m₂ g

            N = g (m₁ + m₂)

let's calculate

            N = 9.8 (0.760 + 1.630)

            N = 23.4 N

This is the force of the support of the two blocks on the surface.

7 0
3 years ago
If it requires 8.0 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be re
jenyasd209 [6]

Answer:

The amount of work done required to stretch spring by additional 4 cm is 64 J.

Explanation:

The energy used for stretching spring is given by the relation :

E = \frac{1}{2}kx^{2}           .......(1)

Here k is spring constant and x is the displacement of spring from its equilibrium position.

For stretch spring by 2.0 cm or 0.02 m, we need 8.0 J of energy. Hence, substitute the suitable values in equation (1).

8 = \frac{1}{2}\timesk\times k \times(0.02)^{2}

k = 4 x 10⁴ N/m

Energy needed to stretch a spring by 6.0 cm can be determine by the equation (1).

Substitute 0.06 m for x and 4 x 10⁴ N/m for k in equation (1).

E = \frac{1}{2}\times4\times10^{4}\times (0.06)^{2}

E = 72 J

But we already have 8.0 J. So, the extra energy needed to stretch spring by additional 4 cm is :

E = ( 72 - 8 ) J = 64 J

7 0
3 years ago
True or False: According to the Arkansas Driver License Study Guide, you must position your hands on the opposite sides of the w
Alchen [17]

Answer:

True

Explanation:

This is a universal rule for all standard motor vehicles.

7 0
3 years ago
The period of a satellite in a circular orbit<br> as the distance from the central object increases.
kow [346]

Answer:

increases

Explanation:

4 0
3 years ago
Read 2 more answers
I can’t figure it out my question is:
melisa1 [442]
Theories

If it’s wrong oh well because I just guest buh glad to help :)
4 0
3 years ago
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