Diva Jiang的物理课程网站 - Diva Jiang的物理

请按照下面的顺序学习并完成内容的打卡

Please study and complete the check-in content in the following order.

文章展示3447

Resource 学习资源

Significant figure 有效数字

Mix calculation 混合运算

Prefix and estimation 前缀和估算

Convert to SI base unit 把结果转化成国际基础单位

Vector and Scalar

Dissolve vector矢量分解

9702 P1 SI unit

9702 P1 Prefix estimation

9702 P1 Vector

Vector and Scalar 标量和矢量

SI base and derived unit 科学基础单位和推导单位

Preparation- Significant figure 有效数值

Preparation-Prefix and estimation 量纲

Finish the following content 完成下面的内容

The significant figure of 33.00 is . The significant figure of 0.2000 is . The significant figure of 34.040 is . The significant figure of 350000000 is . The significant figure of 3405 is . The significant figure of 0.0045 is. The significant figure of 0.740 is . The significant figure of 2220. is .

（123.4+456.90）*0.560=

Answer:

For a sphere with radius of 34.50cm and density of 1.03g/mL. Please calculate the total mass. （with the right significant figure) 对于一个球体，半径34.50cm，密度1.03g/ml 请计算它的质量 (结果的有效数字需要正确）

Answer:

Please finish the following question

According to the rules of significant figures: 234 + 5600 = 660 - 34 = 0.4560 + 0.32 = 0.0092 - 0.02 = 23 × 23 = 0.230 × 0.023 = 985.0 ÷ 32.2 =

The data obtained from the student experiment is shown below, with some missing data. Please fill in the missing data according to the rules of significant figure propagation. 学生实验测试得到的数据如下，部分数据丢失，请按照有效数字传递的法则把缺失的数据填写回来

Load(kg)	Force(N) =mg	Length(mm)	Extension(mm) =L-L0	Spring constant (N/mm)
0.0500		130.	0.	NA
0.0850		212.

Please convert the following unit into SI base unit 请把下面的单位转化成SI Base unit

Unit of velocity can be km/h, if convert to SI base unit it is (速度的单位可以是 km/h，换算为国际单位制基本单位是) /; Unit of acceleration is(加速度的单位是) /²; Due to Newton's second law(根据牛顿第二定律), 1 kg·m/² =1 N; Due to work done, Unit of energy(根据功的定义，能量的单位) 1 J = 1 N· = 1 kg·²/²； Unit of power is watt, if convert to SI base unit it is(功率的单位是瓦特 W，换算为国际单位制基本单位是) kg·²/³.

Fill in the following blank

Vectors are quantities that has magnitude and . Scalars are quantities that has only. Speed is a quantity. Velocity is a quantity. Time is a quantity. Power is a quantity. Distance is a quantity. Displacement is a quantity.