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Jet001 [13]
3 years ago
12

Car jack is machine helps people do work by?

Physics
2 answers:
saul85 [17]3 years ago
8 0

Answer:

d. changing the direction if force

kindly follow.tnx

Temka [501]3 years ago
7 0

Answer: Your answer for this question would be letter D if this is wrong let me know ok have a great day and keep the good work up.

Explanation:

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what is the specific heat capacity of silver metal if 55.00g of the absored 47.3 calories of heat and temperature rise 15.°c​
igor_vitrenko [27]

Answer:

0.240 J/(g^{\circ}C)

Explanation:

When an amount of energy Q is supplied to a sample of substance of mass m, the temperature of the substance increases by \Delta T according to the equation

Q=mC_s \Delta T

where

C_s is the specific heat capacity of the substance

In this problem, we have:

m = 55.0 g is the mass of the sample of silver

Q = 47.3 \cdot 4.184 = 197.9 J is the amount of energy supplied to the sample

\Delta T = 15^{\circ}C is the change in temperature of the sample

Solving the equation for C_s, we find the specific heat capacity of silver:

C_s = \frac{Q}{m \Delta T}=\frac{197.9}{(55.0)(15)}=0.240 J/(g^{\circ}C)

3 0
4 years ago
class 7 Physics answera plot measuring 2 km in length and 1 by 2 km in breadth has area of how many hectare ​
motikmotik

Answer:

Area of plot in hectare = 100 hectare

Explanation:

Given;

Length of plot = 2 km

Width of plot = 1/2 km = 0.5 km

Find:

Area of plot in hectare

Computation:

Area of plot = Length x width

Area of plot = 2 x 0.5

Area of plot = 1 square kilometer

1 square kilometer = 100 hectare

Area of plot in hectare = 1 x 100

Area of plot in hectare = 100 hectare

7 0
3 years ago
Which of the following best describes a nebula?
olchik [2.2K]

Explanation:

is a formation in space which is constituted mostly of helium, dust and other gases in various concentration

8 0
3 years ago
Rearrange the letters from the following words to reveal a fact about force: FOX ENTERS PINE DEN CROSSWISE. Please use all lette
pogonyaev
<em>FORCE IS EXPRESSED IN NEWTONS.</em>
7 0
3 years ago
Local action in a simple cell may be overcomed by​
sergeinik [125]
Zinc plate used in the simple cell is not pure so impurities present in it provides a conducting path for the flow of charge. This makes zinc wasted. It is called the local action. It can be removed by using pure zinc or amalgamated zinc rod.
6 0
3 years ago
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