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Questions in Grade College

[Free] $=\sqrt{1.4-0.0204} \times 20$

[Free] 60. What is the speed of light in a vacuum? a. 300,000 km/s b. 3,000,000 km/s c. 3x10 m/s d. 3x10 m/s 61. Which of the following types of waves require a medium to travel? a. Light waves b. Sound waves c. Radio waves d. X-ray 62. __________ is the term for binding of light as it passes one medium to another. a. Reflection b. Refraction c. Diffraction d. Total internal reflection 63. __________ is the unit of measurement for force. a. Neuton (N) b. Joule (J) c. Kilogram (kg) d. Meter (m) 64. A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to a. exert force on the ball b. increase force of ball on hands c. increase energy to hit ball d. decrease the rate of change of momentum 65. Which of the following is an example of a vector quantity? a. Mass b. Speed c. Velocity d. Time 66. Choose the best option that will help the nation to control global warming. a. Burning of fuel b. Forestation c. Urbanization d. Increasing human population 67. Two bar magnets are placed near each other such that the north seeking poles of both magnets are beside each other. Also two bar magnets near each other so as to have north seeking pole of one beside the south seeking pole of each other. The observation shows that a north-north seeking pole attract b. north-north seeking pole attract c. north-north seeking pole attract d. north-north seeking pole attract 68. What is the process of growing two or more crops in a definite pattern? a. Inter-cropping b. Crop rotation c. Mixed cropping d. Organic cropping 69. Pasturage is related to a. fishery b. cattle c. agriculture d. sericulture 70. Nitrogen, phosphorous and potassium are examples of a. fertilizer b. micro-nutrients c. manure d. nutrients 71. Using fertilizer in farming is an example of a. high cost farming b. low cost farming c. crop farming d. farming 72. Octopus, prawn and crab are examples of a. marine fishes b. fresh-water fishes c. finned fishes d. shell fishes

[Free] What is the ratio if we use 150 of 8% cream to 250 of 2% cream respectively?

[Free] Subtract. $\frac{-5}{8}-\frac{-1}{2}=$

[Free] DVDs were in a sale bin at Discount-Mart. All DVDs in the bin cost less than $5.50. What was the most a customer could have possibly paid for a DVD in the bin? Enter your answer as dollars and cents. Use the variable p to enter an inequality that represents the possible price of a DVD in the bin in dollars.

[Free] Write $5 \times 5 \times 5 \times 5$ using exponents. A) $4^5$ B) $5^5$ C) $5^4$ D) $5^2$

[Free] Which of the following describe important functions of the spine? A. Gives the body structure B. Protects nerve tissue C. Coordinates musculature D. Allows the body to be flexible E. Supports the spinal cord

[Free] Which law would you use to simplify the expression $\left(\frac{p}{q}\right)^3$? A. power of a power B. power of a quotient C. quotient of powers D. power of a product

[Free] One factor of $f(x)=5 x^3+5 x^2-170 x+280$ is $(x+7)$. What are all the roots of the function? A. $x=-4, x=-2$, or $x=7$ B. $x=-7, x=2$, or $x=4$ C. $x=-7, x=5$, or $x=280$ D. $x=-280, x=-5$, or $x=7$

[Free] The function $s=f(t)$ gives the position of an object moving along the $s$-axis as a function of time $t$. Graph $f$ together with the velocity function $v(t)=\frac{d s}{d t}=f^{\prime}(t)$ and the acceleration function $a(t)=\frac{d^2 s}{d t^2}=f^{\prime \prime}(t)$, then complete parts (a) through (f). $s =104 t -16 t ^2, 0 \leq t \leq 6.5$ (a heavy object fired straight up from Earth's surface at $104 ft / sec$ ) $v(t)=104-32 t $ $a(t)=-32$ Choose the correct graph of $s=f(t), v(t)$, and a(t) below. The window for each graph is $[0,6.5]$ by $[-110,250]$. A. B. c. D. When is the object momentarily at rest? Select the correct answer below, and if necessary, fill in the answer box(es) to complete your choice. A. The object is at rest when $v(t)=\square f / sec$, and this occurs at $t=\square sec$. (Type integers or decimals. Use a comma to separate answers as needed.) B. The object is never at rest.