PHYSICS MIDDLE SCHOOL

1. Suppose you give a shopping cart a push and it begins t give a shopping cart a push and it begins to roll across the parking
lot. Once you have stopped pushing it, it slows down and comes to a sto
observation consistent with Newton's First Law? Why or why not?

Answers

Answer 1
Answer:

Newton's first law says the cart should keep going if there's no force acting on it to slow it down. But it slows down and stops. Is there any force acting on it ? You bet ! There's friction in the wheels, and a little bit of air resistance too.


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MIDDLE SCHOOL

All BUT one is a function of the cell wall. That is___ A) provides support
B) provides protection
C) transfers genetic materials
D) regulates the passage of materials

Answers

C the cell wall can’t transfer genetic material
HIGH SCHOOL

Water can be used to create electricity. this type of energy is called _____. nuclear power hydroelectric power electrolysis currents

Answers

Hydroelectric power. That's just the term for electricity gained by using water, think of a water mill.

Answer:

B) hydroelectric power

Explanation:

Water can be used to create electricity. This type of energy is called hydroelectric power. Hydroelectric power plants harness the energy of moving water to turn a turbine, which then generates electricity. Hydroelectric power is a renewable energy source that has been used for centuries, and it is still a popular source of electricity today.

MIDDLE SCHOOL

Which of these shows unbalanced forces at work on an object? A. an ice skater turning as he skates around an ice rink B. a bicycle chained to a bike rack at school C. a car driving at a constant 25 miles per hour on a straight street D. a water skier pulled by a boat at a constant 30 mph

Answers

An ice skater turning as he skates around an ice rink - shows unbalanced forces at work on an object. Hence, option (A) is correct.

What is force?

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

A spring balance can be used to calculate the Force. Newton is the SI unit of force.

Unbalanced forces are those acting on a body when the net force acting on the body is greater than zero. The body alters its state of motion when unbalanced forces act on it.

When  an ice skater turning as he skates around an ice rink, his direction of motion changes. Hence, It  shows unbalanced forces at work on an object.

Learn more about force here:

brainly.com/question/13191643

#SPJ2

I’m pretty sure the answer is a
HIGH SCHOOL

Long ago, it was believed that maggots came from meat. In the late 1600s, Francesco Redi hypothesized that maggots came from flies rather than from meat. Which of these experimental designs could be used to test Redi's hypothesis? A.) an experiment using covered, unrefrigerated meat
B.) an experiment using uncovered, unrefrigerated meat
C.) an experiment using flies under a bell jar
D.) both A and B

Answers

D) Both A and B.

Francisco Redi must use 1)a covered, unrefrigerated meat and 2) an uncovered, refrigerated meat to experiment and test his hypothesis that maggots came from flies rather than from meat.

Answer:

i think its a and b [][]

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