In case of an emergency in the laboratory, students should stop working and wait quietly until given instructions by the teacher

The slower an object moves the more kinetic energy it has. True False

Lady_Fox [76]

False , because its backwards

There will be more energy 'locked away' in a massive lorry that is moving at 20 m/s than in a motorbike travelling at the same speed.

Also the faster it goes the more kinetic energy the lorry will have.

A lorry moving at high speed will have much more kinetic energy than a lorry moving at low speed.

Therefore a fast moving car or lorry will cause more damage in an accident than a slow moving one because this kinetic energy has to be turned into other forms including sound, heat and stress on the other vehicles.

The kinetic energy of an object therefore depends on two things:
(a) the mass of the object (m)
(b) its speed (v)

The formula for kinetic energy of an object of mass m travelling at speed v is:

Kinetic energy (k.e) = 練v2

5 0

3 years ago

Read 2 more answers

Scientists studied isolated cells at various stages of the cell cycle and found that some cells have 1.5 times more DNA than the

Makovka662 [10]

Answer: S- phase of cell cycle

Explanation:

Cell cycle is a cyclical process taken place in a cell leading to duplication of its DNA and division of cytoplasm to form two daughter cells.

The S phase of a cell cycle is an important part of the cycle which is found during interphase stage before either mitosis or meiosis.

The S phase of cell cycle is responsible for the replication of DNA. This replication DNA causes it to double before it enters mitosis or meiosis.

4 0

3 years ago

How do body systems work together to maintain homeostasis

Novosadov [1.4K]

Answer: By Hormonal action and Nervous coordination

Explanation:

Hormones are substances produced by one tissue and conveyed by the bloodstream to another to effect physiological activity. Homeostasis is the maintenance of a stable internal environment in the body.

Body systems such as digestive, circulatory, excretory systems etc, all are coordinated to achieve a STABLE INTERNAL ENVIRONMENT by the aid of HORMONES AND/OR NERVOUS COORDINATION.

For Example: the vasodilation of blood vessels during hot weather, and the opposite action of vasoconstriction during cold weather are both controlled by Hormonal action and nervous coordination which leads to a stable body temperature preventing excess heat accumulation.

Also, Nervous system controls the body systems, such that the muscle contractions are joined to actions like sweating, breathing, respiration etc

So, to maintain homeostasis hormonal action and Nervous coordination is necessary.

4 0

4 years ago

Sepsis List each type of sepsis, identify causes of each, list prevention techniques, and compare and contrast each type.

zheka24 [161]

Sepsis refers to a life-threatening issue of the infection. It takes place due to the immune reaction to the bacterial infection that invades the blood. It usually results in injury or organ failure. The following are the kinds of sepsis:

1. Lung sepsis (Pneumonia)

2. Urinary tract sepsis (Kidney infection)

3. Gastrointestinal sepsis (Abdominal infection)

4. Bloodstream sepsis (Septicemia)

The causes of sepsis: Any infection can result in sepsis if not treated properly. The infectious agent passes via the blood and leads to sepsis of any parts of the body. It can be caused due to bacterial infections, fungal infections, old age problems, drug-resistant bacteria, and a weakened immune system.

Some of the preventive measures for sepsis are as follows:

1. Taking vaccinations

2. Practice good hygiene

3. Proper care for wounds

4. Safe water and sanitation

5. Eating probiotics

6. Proper treatment for infections

Lung sepsis: Also known as pneumonia, is an infection in the lungs. It is caused by fungi, bacteria, and viruses. It is a hospital-acquired infection. Some of the symptoms of pneumonia sepsis are fever, cough, sweating, muscle pain, and chest pain. It is treated with the help of antibiotics.

Urinary tract sepsis: It causes urosepsis. It majorly affects women and men in ICU. The symptoms are a pain in the lower back, fever, vomiting. nausea decreased urine output. The treatment for urinary tract sepsis is antibiotics, apart from that intravenous fluids, oxygen, and other medications are taken.

Bloodstream sepsis: It is also known as blood poisoning. It is life-threatening and can spread to different parts of the body. The symptoms include dizziness, low blood pressure, dehydration, confusion, and joint pains. This is also treated with the help of antibiotics administered intravenously.

Gastrointestinal sepsis: It is also known as peritonitis. It is caused due to the presentation of an infection into the sterile peritoneal environment due to organ perforation, and may also result due to other irritants like foreign bodies, gastric acid from a perforated ulcer, bile from a lacerated liver or from a perforated gallbladder. The symptoms of the condition are abdominal pain, fever, bloating, and loss of appetite, low urine output, diarrhea, and thirst. It is also treated with the combination of antibiotics.

7 0

3 years ago

The cell membrane helps to control what enters and leaves a cell. Which of these substances, which accounts for about two-thirds

antoniya [11.8K]

There are other avenues to find the cure to diseases that do not involve exploiting fetuses.

7 0

3 years ago