Other Physics Answers

A spacecraft is moving relative to the earth.An observer on the earth finds that, according to her clock, 3601 s elapse between 1pm and 2pm on the spacecraft’s clock.What is the spacecraft’s speed relative to the earth?

Find the masa of an object whose rest mass is 1000g when it is travelling at 90% of the speed of light?

The half-life of radium is 1600 years. The fraction of a sample of radium that would remain after 6400 years

Direction: Choose the letter of the BEST answer.

1. What Mendelian principle states that in a heterozygous gene pair, the dominant 

trait will mask the recessive trait?

a. Dominance

c. Codominance

b. Segregation

d. Independent Assortment

2. Given that (A) is for axial flower position and (a) is for terminal flower position. What 

is the phenotype of an organism having Aa genotype?

a. Axial

c. Both axial and terminal 

b. Terminal

d. None of the above

3. Tall stem length (T) is dominant over dwarf stem length (t) in garden pea plants. 

What is the phenotypic ratio from the cross Tt x Tt?

a. 3 tall: 1 dwarf

c. 1 tall: 3 dwarf

b. 2 tall: 2 dwarf

d. 0 tall: 4 dwarf

4. If the heterozygous inflated pod garden pea plant is cross with constricted pod 

garden pea plant, what are the chances of producing constricted garden pea plant?

a. 0%

c. 50%

b. 25%

d. 100%

Choose the term that best complete each sentence.

Conservation Of charge

Static charge

Static electricity

electric field

conduction

friction

induction

electric force

1. In electricity, ______ is the attraction or repulsion between electric charges.

2. The buildup of charge on an object is called ______

3. The law of _____ states that charges are not created or destroyed. They are transferred.

4. The transfer of charge from one object to another by rubbing is called ____. The loss of static electricity as electric charges transfer from one object to another is called _____

5. A(n) _____ is a region around a charged object where the object's electric force is exerted on other charged objects.

6-7 The transfer of electrons from one part of an object to another part, caused by the electric field of another object, without the two objects touching is called _______

8-10. The transfer of charge when electron move from a charged object to another object by direct contact is called _______

1.How can an object become charged?

2. The buildup of charges on an object is called _____

3. If an object gains electrons, what will be its overall charge?

4. What law states that charges are not created or destroyed?

Choose the letter of the sentence that explains why there is no overall electric charge in a neutral object.

a. In the object's atoms, each positive charge is balanced by a negative charge.

b. The object's atoms contain no charged particles

c The positive charges are attracted to other positive charges.

d. In the object's atoms, negative charges outnumber positive charge.

1. Electric field lines are drawn with arrows to show the ________ of the electric force.

2. Is the following sentence true or false?. The greater the distance, the stonger the electric field, _______

3. When there are two or more charges, the electric fields of each individual charge ________ by repelling or attracting.

1. Why do protons repel protons but attract electrons?

2. The interaction between electric charge is called _____

3 What is electric force?

4.What is a region around a charged object where the object's electric force is exerted on other charged objects?

Choose the letter of each statement that is true about interactions between charges.

a. Charges that are the same repel each other.

b. Charged objects never attract each other.

c. Charges that are different attract each other.

d Charged Objects always repel each other.