You push against a steamer trunk with a force of 750 N at an angle of 25° with the horizontal . The trunk is on a flat floor and the coefficient of static friction between the trunk and floor is 0.77. What is the most massive trunk you will be able to move?

Answers

Answer 1

Answer: This means that the horizontal force is 750sin(25°). To be able to move the truck, force applied must be greater than static friction, which equals to its coefficient (0.77) x normal contact force (= weight)

Hence, 750sin(25°) = 0.77mg. m = 750sin(25°)/(0.77g)

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How many meters is 32 kilometers?a. 3.2 × 10-5 meters
b. 3.2 × 10-4 meters
c. 3.2 × 103 meters
d. 3.2 × 104 meters
e. 3.2 × 105 meters

Answers

Answer : The correct option is, (d)

Explanation:

We are given 32 kilometers and we need to convert it into meters, so for that the conversion factor used is:

1 km = 1000 m

So, 32 kilometers will be equal to:

32 km = $32* 1000m=32000m=3.2* 10^(4)m$

Hence in 32 km there are $3.2* 10^4m$

So, the correct option is option d.

the answer is D. You have to move the decimal 4 places to the left and when you move it to the left its positive exponent.

What is the total number of atoms in the following formula? CaBr2

Answers

There is 3 atoms.
Ca + 2 BR = 3 Atoms

3 atoms are the total number of atoms

What comes into your mind when you hear the words momentum

Answers

The word momentum means mass and velocity taken together.

What is mass ?

Mass is an intrinsic basic physical quantity which tells us about the amount of matter contained in a body. It is a scalar quantity and it is measured in kilogram(Kg).

What is Velocity?

Velocity is the rate of change of displacement . It is defined as displacement per unit time. It is a vector quantity and measured in meter per second (m/s)

What is momentum?

The product of mass and velocity is momentum. When a body possesses both mass and velocity we say that it has momentum. It is a vector quantity. Its unit is kg m/s

Mathematically we write momentum as,

P = mv

Mathematically we write momentum a

Where, P = momentum

m = mass

v= velocity.

When a force is applied on a body, it changes its momentum. The relationship between force and momentum is given by Newton's second law of motion which states that the rate of change of momentum is directly proportional to the force applied,

F = Δp /Δt

Where F= force

Δp = change in momentum

Δt = time taken for the change in momentum to occur.

To know more on momentum here

brainly.com/question/24030570

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Answer:

In my mind when I hear the word momentum it comes that it is the product of mass and velocity.

Simone created a chart to summarize the energy transformations that take place when energy from the wind is used to generate electricity.Which best completes the chart?

nuclear energy transformed to electrical energy

chemical energy transformed to electrical energy

radiant energy transformed to mechanical energy

kinetic energy transformed to mechanical energy

Answers

Kinetic energy transformed to mechanical energy. The object that is being rotated by the wind gains kinetic energy and the motor, that is connected to the rotating object, gains mechanical energy.

The mechanical energy gained will be transformed into electrical energy once the set up starts to be used for generating electricity.

Answer:

kinetic energy transformed to mechanical energy or D

Explanation:

got it right on edge 2022!

A constant force is applied to an object, causing the object to accelerate at 10 m/s^2. What will the acceleration be if: a) The force is halved? b) The object's mass is halved? c) The force and the object's mass are both halved?

Answers

What you need to know is that the force is

F=ma

The force is the product of mass and acceleration

this means that the acceleration is

a=F/m

a) The force is halved?
this means that f will be $(F)/(2)$ now:

a= $(F)/(2m)$

So the accelaration will also he halved (it's the original acceleratation divided by 2)

b) The object's mass is halved?
a= $(F)/(m/2)$ =a= $(F2)/(m)$

which is the original acceleration times two!! so it will double

c) The force and the object's mass are both halved?
now we have

a= $(F/2)/(m/2)$ =a= $(2F)/(2m)$ =a= $(F)/(m)$

so they will cancel each other out and the acceleration will stay the same!

A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this speed and in this direction?

Answers

There is zero net force required to keep an object moving, even in the same direction. This is because the inertia only depends on the mass of the object moving, not the speed. Therefore, the answer would be none.

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