Your shopping cart has a mass of 65 kilograms. In order to accelerate the shopping cart down an aisle at 0.30 m/s2 What force would you need to use or apply to the cart. I don't know how to solve this


Answer 1
Answer: Justin ! Justin ! ! You're in high school Physics. You've done Newton's Laws until you saw them in your sleep. When the wind rustles through the trees, you almost hear it whispering to you "F = M A". Now is the time to use that ! M=65kg. A=0.3m/s^2. F = (65)(0.3)=19.5 newtons.

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Karissa is conducting an experiment on the amount of salt that dissolves in water at different temperatures. She repeats her tests several times using the same procedure.What can Karissa do to further increase confidence in the results of her experiment?

have another scientist run the same exact procedure in her lab
include several other liquids for comparison
calculate the average amount of salt that dissolves to summarize findings
make sure the experiment follows a specific procedure that allows other scientists to produce the same findings



C.) Calculate the average amount of salt that dissolves to summarize findings


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Calculate the average amount of salt that dissolves to summarize finding

-The third choice/ C-

Have a good day :)

A unit of power equal to 746 watts is a(n)__


1 Horsepower.
A Horsepower = 746 watts

What is the weight, on Earth, of a book with a mass of 1.5 kg


Answer: 14.7 N


The weight of an object on Earth is given by



m is the mass of the object

g=9.81 m/s^2 is the acceleration due to gravity on Earth's surface

In this problem, we have a book of mass m=1.5 kg, so its weight is given by

W=mg=(1.5 kg)(9.81 m/s^2)=14.7 N

The answer is
D) 14.7 N

The mass of a lamb that weighs 110 n is about a. 1 kg.
b. 11 kg.
c. 110 kg.
d. 1100 kg.
e. none of the above


A lamb that weighs 110 N has a mass of around 11 kg. Hence, option B is correct except B all options are incorrect.

What are Mass and Weight?

The mass of a physical body is a measure of its entire makeup. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of a body's gravitational pull on other bodies is also influenced by its mass. The kilogram is the fundamental mass unit of the SI.

In physics and engineering, the weight of an object refers to the gravitational force that pulls on it. Weight is the term used in many widely used textbooks to describe the gravitational force acting on the object. Some people think of weight as a scalar quantity that gauges the gravitational force's strength.

According to the question, the given values are :

Weight, w = 110 N and,

Taking value of g = 10 m/s²

As we know that  :

w = m × g

110 = m (10)

m = 11 kg

Hence, the mass of the lamb will be 11 kg.

To get more information about Mass and weight :


g = 10 m/s²
w = 110 N

w = m x g
110 = m x 10
110 = 10 m
m = 110/10 = 11 kg

How do you connect 1 ohm, 2 ohm and 3 ohm resistors to getan equivalent resistance of 5/6 ohm.


You (or your homework sheet) may be fishing for the answer "connect
the 3 resistors in parallel", but that does not do the job.

When those 3 resistors are connected in parallel, their combined resistance
is 6/11 ohm.

If the 2 and the 3 alone are in parallel, their combination is 6/5 ohms, and
adding the 1 ohm in series makes 2.2 ohms.

If the 1 and the 2 alone are in parallel, their combination is 2/3 , and adding
the 3 in series makes 3 and 2/3 .

If the 1 and the 3 alone are in parallel, their combination is 3/4 , and adding
the 2 in series makes 2.75 .

There is nothing you can do with those 3 resistors, or with any 2 of them,
or with any 1 of them, that will give you 5/6 ohm .

A ball thrown vertically upward reaches a certain height and comes down again. What can you say about its kinetic energy at the maximum height?


Answer: The kinetic energy of the ball at the maximum height is zero.

Explanation -

As per the question, the ball is moving vertically upwards. Every time it's velocity will decrease and it becomes zero at the maximum height.

Whole of ball's initial kinetic energy is converted into potential energy at maximum height.

Thus we can conclude that the kinetic energy is zero at the maximum height.

The maximum height is the point where the ball runs out of gas,
stops rising, starts falling, and it's velocity changes from upward
to downward.  At that instant, it has no speed, so its kinetic energy
is zero.