PHYSICS HIGH SCHOOL

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg,The magnitude of the normal force acting on the bed is .967 N
5.00 N
1440 N
1490 N

Answers

Answer 1
Answer:

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg. The magnitude of the normal force acting on the bed is 1490 N.

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

The force applied by the nurse is horizontal, so there's no vertical component.

Therefore, the normal force is simply equal to the weight of the bed.

N = mg

N = (152 kg) (9.8 m/s²)

N = 1490 N

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg. The magnitude of the normal force acting on the bed is 1490 N.

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Answer 2
Answer:

Answer:

1490 N

Explanation:

The force applied by the nurse is horizontal, so there's no vertical component.

Therefore, the normal force is simply equal to the weight of the bed.

N = mg

N = (152 kg) (9.8 m/s²)

N = 1490 N

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The coordinates of a bird flying in the xy-plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s2.part a:Calculate the velocity vector of the bird as a function of time. Give your answer as a pair of components separated by a comma. For example, if you think the xcomponent is 3 and the y component is 4, then you should enter 3,4.part b:Calculate the acceleration vector of the bird as a function of time. Give your answer as a pair of components separated by a comma. For example, if you think the x component is 3 and the y component is 4, then you should enter 3,4

Answers

α=2.4 (m)/(s)

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Static charge develops on a substance as it acquires or loses protons due to friction. a. True
b. False

Answers

True because once it builds up enough + or - charges

Final answer:

False. The occurrence of a static charge on a substance is due to the gain or loss of electrons, not protons. This electron transfer occurs mostly when friction is between two different materials, leading to the creation of static electricity. Protons, being part of the atomic nucleus, stay stable and do not move, unlike electrons.

Explanation:

The statement given in the question is False.

  • Static charge develops on a substance when it gains or loses electrons, not protons. In fact, when friction is involved between two different materials, electrons get transferred from one material to another.
  • The one that gains electrons becomes negatively charged, while the one that loses electrons becomes positively charged. This is the principle behind the creation of static electricity. The protons in an atom are part of the atomic nucleus and they remain stable and don't move around, unlike electrons, which can move freely and transfer from one atom to another.

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In a motor dozens or hundreds of wire loops wrapped around a ferromagnetic core is called

Answers

I believe the word you are looking for is called an armature. 

The atomic mass of an element whose atoms consist of seven protons, eight neutrons, and seven electrons is _____?a. 7
b. 14
c. 15
d. 22

Answers

The atomic mass is C. 15

Atomic mass = P + N = 7+8 = 15

The atomic mass of an element is defined as the sum of the protons and neutrons. On the other hand, the atomic number of a neutral element is equivalent to the number of protons or electrons. This is because a neutral element should have equal number of protons and electrons.

Answer:

15

Explanation:

15

Select all of the statements that are true.

Answers

I think its all four of them could be wrong but try all four !!!!!!

When an object is charged, what type of subatomic particle is transferred between objects?

Answers

Electrons are transferred. The object that loses some becomes positively
charged. The object that gains some becomes negatively charged.

Answer:

electrons

Explanation:

took the k12 test
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