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Dahasolnce [82]
4 years ago
12

Name two objects that have a high density.

Physics
1 answer:
Sonbull [250]4 years ago
4 0

Answer:

Iron and stone

Explanation:

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The first formal laboratory for research in psychology was established by B.F. skinner
guajiro [1.7K]
False, it was Wilhelm Wundt that founded the first formal laboratory for research in psychological studies. 

*** B.F Skinner is known for inventing the operant conditioning chamber. ***
8 0
3 years ago
How does a generator use the effect you noticed in the pickup coil to generate electrical energy? What energy transformations ar
Oksana_A [137]

Answer:

Movement of Electrons in opposite direction of the rotation of the pickup coil leads to the direction of Electrical energy ( Alternating current ).

Explanation:

For a Generator to generate electricity, Electrons that is found in the rotating coil of the Generator will experience some sort of force that makes them to start moving in a direction that is perpendicular to the direction of the rotating/pickup coil found in the Generator.

The conversion of mechanical energy (Rotation of the pickup coil ) to electrical energy takes place in the Generator

The generator makes an alternating current because electrons move in opposite direction of the rotating coil

In other to generate a Direct current using a generator we have to replace the slip rings with commutator.

6 0
3 years ago
What components of an ecosystem do organism respond to
sweet [91]
All components, Abiotic to Biotic
7 0
3 years ago
n the figure, a uniform ladder 12 meters long rests against a vertical frictionless wall. The ladder weighs 400 N and makes an a
Leto [7]

Since the ladder is standing, we know that the coefficient of friction is at least something. This [gotta be at least this] friction coefficient can be calculated. As the man begins to climb the ladder, the friction can even be less than the free-standing friction coefficient. However, as the man climbs the ladder, more and more friction is required. Since he eventually slips, we know that friction is less than what's required at the top of the ladder.

 

The only "answer" to this problem is putting lower and upper bounds on the coefficient. For the lower one, find how much friction the ladder needs to stand by itself. For the most that friction could be, find what friction is when the man reaches the top of the ladder.

Ff = uN1

Fx = 0 = Ff + N2

Fy = 0 = N1 – 400 – 864

N1 = 1264 N

Torque balance

T = 0 = N2(12)sin(60) – 400(6)cos(60) – 864(7.8)cos(60)

N2 = 439 N

Ff = 439= u N1

U = 440 / 1264 = 0.3481

3 0
3 years ago
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A missile is fired from a jet flying horizontally at Mach 1 (1100 ft/s). The missile has a horizontal acceleration of 1000 ft/s
gayaneshka [121]
V = u + a*t = 1100ft/s + (1000*10) ft/s = 11100 ft/s 
Answer is <span>11,100 ft/s  </span>
5 0
3 years ago
Read 2 more answers
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