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Sergeeva-Olga [200]

3 years ago

13

Using a hammer to drive a nail, it is the reaction force that brings the motion of the hammer to a stop but the _______________

that drives the nail into the wood.

1 answer:

ratelena [41]3 years ago

3 0

Action force
Hope I helped out!

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George feels very energetic and active on some days of the month and engages in gardening, washing laundry, and other menial job

Allisa [31]

Answer:

Valproate (Depakote)

Explanation:

it is a mood stablizer

8 0

3 years ago

Andrew is pushing this block to the right across on the floor. Which force in the free body diagram is pointing in the wrong dir

soldier1979 [14.2K]

Answer:

the normal force

Explanation:

The free-body diagram represents all the forces acting on an object. In this example, there are four forces acting on the box: an applied force, the friction (which always act opposite to the applied force), the weight of the box (which is always downward), and the normal force.

The normal force is the reaction force exerted by the surface on which the box is moving on the box, and this reaction force is always opposite to the force exerted by the box on the surface. Since the latter is downward, it means that the normal force must be upward, so in the diagram it is wrong.

8 0

3 years ago

Read 2 more answers

Snezhnost [94]

Frozen water has move volume than water in liquid form

8 0

3 years ago

A hockey puck with a mass of 0.16 kg travels at a velocity of 40 m/s toward a goalkeeper. The goalkeeper has a mass of 120 kg an

Ainat [17]

Answer:

Explanation:

Momentum is the product of mass of a body and its velocity.

Given the mass of the puck m1 = 0.16kg

velocity of the puck v1 = 40m/s

Given the mass of the goalkeeper m2 = 120kg

velocity of the goalkeeper v2= 0m/s (goal keeper at rest)

The total momentum of the goalkeeper and puck after the puck is caught by the goalkeeper is expressed as:

m1v1 + m2v2 (their momentum will be added since they collide)

= 0.16(40) + 120(0)

= 0.16(40) + 0

= 6.4kgm/s

Let us calculate their common velocity using the conservation of momentum formula;

m1u1 + m2u2 = (m1+m2)v

6.4 = (0.16+120)v

6.4 = 120.16v

v = 6.4/120.16

v = 0.053m/s

Hence after collision, both objects move at a velocity of 0.053m/s

Momentum of the puck after collision = m1v

Momentum of the puck after collision = 0.16*0.053m/s

Momentum of the puck after collision = 0.0085kgm/s

Momentum of the keeper after collision = m2v

Momentum of the keeper after collision = 120*0.053m/s

Momentum of the keeper after collision = 6.36kgm/s

From the calculation above, it can be seen that the keeper has the greater momentum after the puck was caught since the momentum of the keeper after collision is greater than that of the puck

4 0

3 years ago

What is the wavelength of the carrier wave of a campus radio station, broadcasting at a frequency of 97.2 MHz (million cycles pe

andrey2020 [161]

Answer:

Wavelength is 3.08 meters.

Explanation:

It is given that,

Frequency, $f=97.2\ MHz=97.2\times 10^6\ Hz$

We need to find the wavelength of the carrier wave of a campus radio station. It can be calculated by using following relation as :

$c=f\times \lambda$

$\lambda=\dfrac{c}{f}$

$\lambda=\dfrac{3\times 10^8\ m/s}{97.2\times 10^6\ Hz}$

$\lambda=3.08\ m$

So, the wavelength of the carrier wave is 3.08 meters. Hence, this is the required solution.

8 0

3 years ago