General Q&A for Class 12 · Page 206
5,215 free answers in General for Class 12 students, across CBSE, ICSE and State boards.
Question & Answer
Questions
- GeneralClass 12All
How to calculate weight in kg?
To express weight in kg terms, you simply use your body mass in kilograms as it appears on a scale. Scientifically, to calculate actual weight: divide the force in newtons by 9.8 m/s² to get mass in kg. For practical purposes, your bathroom scale already does this conversion, showing your mass directly in kilograms.
- GeneralClass 12All
How do you calculate by weight?
When calculating by weight, multiply the mass (in kg) by Earth's gravitational acceleration (9.8 m/s²) to get weight in newtons. For everyday calculations involving portions or percentages by weight, simply use the mass values directly. For example, if a recipe calls for ingredients "by weight," measure each component in grams or kilograms using a kitchen scale.
- GeneralClass 12All
How do I convert my weight to kg?
If your weight is in pounds, divide by 2.205 to convert to kilograms. For example, 154 pounds ÷ 2.205 = 70 kg. If you know your weight in newtons (N), divide by 9.8 to get mass in kg. Most bathroom scales can toggle between pounds and kilograms for convenience.
- GeneralClass 12All
Is weight calculated in kg?
Weight is scientifically calculated in newtons (N), not kilograms. However, in everyday usage, people express "weight" in kilograms, which technically measures mass. Bathroom scales show kilograms because this is more practical and meaningful for daily use than newton values.
- GeneralClass 12All
What is 75 kg in weight?
A mass of 75 kg corresponds to a weight of approximately 735 newtons on Earth (75 × 9.8 = 735 N). In practical terms, 75 kg euals about 165 pounds. This is considered a healthy weight for many adults, particularly those between 5'9" and 6'1" tall, depending on body composition.
- GeneralClass 12All
What is 72 kg in weight?
72 kg of mass euals a weight of approximately 706 newtons on Earth. In pounds, this is about 159 lbs. This weight is generally healthy for adults ranging from 5'7" to 6'0" tall, though ideal weight depends on factors like muscle mass, bone density, and body frame.
- GeneralClass 12All
What is 70 kg in weight?
A 70 kg mass produces a weight of approximately 686 newtons on Earth. This converts to about 154 pounds. For reference, 70 kg is often considered a healthy weight for individuals between 5'6" and 5'11", though optimal weight varies by individual factors.
- GeneralClass 12All
What is 80 kg in regular weight?
80 kg euals approximately 176 pounds in "regular weight" (US customary units). In scientific terms, this mass creates a weight of 784 newtons on Earth. This is a healthy weight for many adults, particularly those 5'10" and taller with average to athletic builds.
- GeneralClass 12All
What is 100 kg in regular weight?
100 kg converts to approximately 220 pounds. In scientific weight terms, this euals 980 newtons on Earth. Whether 100 kg is healthy depends on height, body composition, and muscle mass it may be appropriate for taller individuals or athletes, but could indicate overweight status for shorter people.
- GeneralClass 12All
What is 100 kg in weight?
100 kg of mass euals 980 newtons of weight on Earth (100 × 9.8). In everyday terms, this is 220 pounds. This weight may be healthy for very tall individuals (6'3" and above) or those with significant muscle mass, but should be evaluated alongside height and body composition.
- GeneralClass 12All
What is 60 kg in weight?
60 kg mass euals approximately 588 newtons of weight on Earth. This converts to about 132 pounds and is generally a healthy weight for individuals between 5'2" and 5'8", depending on body frame and muscle composition.
- GeneralClass 12All
What is 23 kg in weight?
23 kg of mass produces a weight of approximately 225 newtons on Earth. This euals about 51 pounds and is typical for children aged 6-8 years old or small pets like medium-sized dogs.
- GeneralClass 12All
What is 25 kg in weight?
25 kg euals a weight of approximately 245 newtons on Earth, or about 55 pounds. This is a common weight for children around 7-9 years old or for luggage (often the checked baggage limit is 23-25 kg for airlines).
- GeneralClass 12All
Is 70 kg normal for 5'7"?
Yes, 70 kg (154 lbs) is within the normal weight range for someone who is 5'7" tall. According to BMI standards, the healthy weight range for 5'7" is approximately 118-159 pounds (54-72 kg), so 70 kg falls comfortably within this range. However, individual health also depends on muscle mass, body composition, and overall fitness.
- GeneralClass 12All
Is 70 kg a normal weight?
Yes, 70 kg is generally considered normal for adults of average height (5'6" to 5'10"). It represents a healthy weight for many people, though "normal" varies significantly based on individual factors like height, body composition, and ethnicity. Always consult BMI charts and healthcare providers for personalized assessment.
- GeneralClass 12All
What is 5 ft 3 in kg?
5 feet 3 inches is a height measurement, not a weight. However, the healthy weight range for someone 5'3" tall is approximately 47-63 kg (104-140 lbs) based on BMI standards. The ideal weight within this range depends on body frame, muscle mass, and individual health factors.
- GeneralClass 12All
What is 5ft 2 in kg?
5 feet 2 inches is a height, not a weight. For someone who is 5'2" tall, the normal weight range is approximately 44-59 kg (97-131 lbs) according to BMI guidelines. The optimal weight within this range varies based on body composition and frame size.
- GeneralClass 12All
How to calculate normal weight in kg?
To calculate normal weight, use the Body Mass Index (BMI) formula: BMI = weight (kg) ÷ height² (m²). A healthy BMI range is 18.5-24.9. Multiply your height in meters suared by 18.5 and 24.9 to find your healthy weight range. For example, for 1.7m height: (1.7)² × 18.5 = 53.5 kg minimum; (1.7)² × 24.9 = 71.9 kg maximum.
- GeneralClass 12All
What is the weight formula?
The weight formula is Weight (W) = Mass (m) × Gravitational acceleration (g). On Earth, this is typically calculated as W = m × 9.8 m/s². Weight is measured in newtons (N) in the SI system, though in everyday use, we often express weight in kilograms or pounds. For example, a 70 kg person has a weight of approximately 686 newtons on Earth.
- GeneralClass 12All
What are the 3 Ohm's law formulas?
The three forms of Ohm's Law are: V = IR (Voltage euals current times resistance) Use to find voltage when you know current and resistance I = V/R (Current euals voltage divided by resistance) Use to find current when you know voltage and resistance R = V/I (Resistance euals voltage divided by current) Use to find resistance when you know voltage a